Question

alguem pode me ajudar a resolver essas contas por favor

Answer 1

3(x+3)-1=2

3x+9-1=2
3x=2+1-9
3x=-6
x=-6/3
x=-2

2(x+1)+5(x-1)=7

3x+2+5x-5=7
3x+5x=7+5-2
8x=10
x=10/8
x=1,25

3(x+2)=2(x-7)

3x+6=2x-14
3x-2x=-14-6
x=-20

Answer 2

3(x+3)-1=2

3(x+3)=2+1
3(x+3)=3
(x+3)=3/3
(x+3)=1
x=1-3
x=-2

2(x+1)+5(x-1)=7

2x+2+5x-5=7
2x+5x=7-2+5
7x=10
x=10/7
x=1,5

3(x+2)=2(x-7)

3x+6=2x-14
3x-2x= -14-6
x=-20