Question

Numarul -6 este solutie a ecuatiei 2(x+3a)+5=11 daca a este egal cu....

Answer 1

2(-6+3a)+5=11
2(-6+3a)=11-5
2(-6+3a)=6
-6+3a=6/2
-6+3a=3
3a=3+6
3a=9
a=9/3
a=3

Answer 2

$2(x+3a)+5=11 \\ 2(-6+3a)+5=11 \\ -12+6a+5=11 \\ 6a=11+12-5 \\ 6a=23-5 \\ 6a=18 \\ a= \frac{18}{6} \\ a=3$