7x = 18 - 2x 7x + 2x = 18 9x = 18 x = 2
(7x)(2x - 27) This means multiply the '7x' to each term in the other set of brackets. Hence 14x^2 - 189x
2x = 7x - 10 subtract the 7x from both sides 2x - 7x = -10 -5x = -10 divide both sides by -5 x = 2
2x+7x-10=4x+3-2x 9x-10=2x+3 7x=13 x=13/7ans
7x - 9x = -2x
If it's + 7x, the answer is (2x + 3)(5x - 4) If it's - 7x, the answer is (2x - 3)(5x + 4)
2x-6 < 5+7x 2x-7x < 5+6 -5x < 11 x > -2.5
If you mean 2x+4(7x-1) then 2x+28x-4=30x-4=2(15x-2) If you mean 2x+4(7x)-1 then 2x+28x-1=30x-1
(7x-9=-2x)+4x=2x
2x+4+7x-4 is the same as 9x
2x+18=7x-30 7x-30=2x=18 7x-2x=18+30 5x=48 x=9.6
7 plus 7x--2x plus 3 is: 7 + 7x + 2x + 3 = 0 9x + 10 = 0 9x = -10 x = -10/9 = -1 1/9