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2a+2a-7b+7b

=4a

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โˆ™ 2011-03-07 17:01:31
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Q: How do you solve 2a 7b 2a - 7b?
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add like terms: 3a -2a -5b + 6b +3b - 7b = a -3b


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6a + (7b - 4a - 8b) = (6a - 4a) + (7b - 8b) = 2a - b


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1a+3b 2a+4b=3a +7b


What is the answer to 2a plus 7b equals -1 3a - 7b equals -5?

2a + 7b = -13a - 7b = -5The system of equations can be solved by elimination:2a + 3a = -65a = -6a = -6/5substitute the value of a in any of the two original equations to find the value of b:2(-6/5) + 7b = -1-12/5 + 1 = -7b-7/5 = -7bb= 1/5


What is the simplification for 3a plus 4b-5-a plus 7b plus 3-b?

3a + 4b - 5 - 1a + 7b + 3 - 1b 2a + 10b - 5 + 3 2a + 10b - 2


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Subtract 2a from each side: P - 2a = b ie b = P - 2a


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(2a + 1)(4a2 - 2a + 1)


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2ab - 3b2 - 3b + 2a does not have a solution, as it is not an equation.


What is 3a plus 4 plus b plus 2a plus 5 plus b?

The idea here is to combine terms that have the same variable (or, in more complicated cases, the same combination of variables). For example, 3a + 2a is the same as 5a.


Simplify the expression 3a plus 2b - c - 2a plus 5b plus 3c by combining like terms?

a + 7b + 2c


How do you solve this equation 14b2-10b-36?

2(7b + 9)(b - 2)


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-2a + 5 = 1 -2a = -5 + 1 -2a = -4 a = -4/-2 a = 2


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a = 4


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If: 2a+13 = 5a+1 Then: a = 4


Solve each equation 2a-4 459-a check?

2a-8+4=45-5a 2a-4=45-5a 2a-4+4=45+4-5a 2a+5a=49-5a+5a 7a=49 / by 7 = A=7


Can someone Simplify the expression 3a plus 2b - c - 2a plus 5b plus 3c by combining like terms?

ok, let's see: (3a-2a) + (2b+5b) +(-c +3c) = a + 7b +2c I think that's right.


What is the equation 2a-b3?

Firstly, I think you mean 2a-3b. The numbers always come first. Secondly, 2a-3b is an expression, not an equation as equations have equeal signs in them. Lastly, you do not have enough information to solve 2a-3b since it is an expression. Therefore, the answer to your question is 2a-3b.


Solve the following equation for A2A 3 4A?

Solve the following equation for A : 2A/3 = 8 + 4A


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A equals one-half h b plus c in parentheses solve for b?

:a = .5(hb+c) :2a = hb+c :2a−c = hb :(2a−c)/h = b


How do you solve for the variable b in 2a plus 2b equals c?

2a + 2b = c subtract 2a from both sides 2a - 2a + 2b = c - 2a 2b = c - 2a divide both sides by 2 (2/2)b = (c - 2a)/2 b = (c - 2a)/2 --------------------


How do you solve quadratic?

By using the quadratic formula. (-b±√b2-4ac)/(2a)