10a + 15 = 5 (2a + 3)
10a - 15 ÷ 5 Order of Operations makes the equation this: 10a - 3, which is in simplest form.
Quotent is the result of a division 15/(a+5)=10 multiply both sides by (a+5) 15=10a+50 10a=-35 a=-3.5
15
10a+a
10a − 3 − 4a
to solve this expression: 10a-4(a+2) -> 10a-4(a)-4(2) -> 10a-4a-8 -> 6a-8
16
10a + 3a - 4a = 9a
10a - 5b = 25 So 5b = 10a - 25 and hence b = 2a - 5
100a2 - 49b2 is the difference of two perfect squares. Therefore, it is equal to the sum times the difference of the roots: (10a + 7b)(10a - 7b)
The GCF is 2a.