5(x+3)+7=3(x+12) 2(a+2)-10=6(3-a) 3(2y-1)+6(3y-4)=83+5(y-3)

Question

5(x+3)+7=3(x+12) 2(a+2)-10=6(3-a) 3(2y-1)+6(3y-4)=83+5(y-3)

Answer 1

1) 5(x-3)+7=3(x+12); 5x-15+7=3x+36; 5x-8=3x+36; 5x-3x=36+8; 2x=44; x=22;

Answer 2

1) 5(x+3)+7=3(x+12) 
5x+15+7=3x+36
5x+22=3x+36
5x-3x=36-22
2x=14
x=14÷2
x=7

2)2(a+2)-10=6(3-a)
2a+4-10=18-6a
2a-6=18-6a
2a+6a=18+6
8a=24
a=24÷8
a=3

3) 3(2y-1)+6(3y-4)=83+5(y-3)
6y-3+18y-24=83+5y-15
24y-27=68+5y
24y-5y=68+27
19y=95
y=95÷19
y=5