Question

Resolva as sentenças abaixo:

3.x-2 = 10
2.x-1 = x+2

Answer 1

3x-2=10
3x=10+2
3x=12
x=12/3
x=4

2x-1=x+2
2x-x=2+1
x=3

Answer 2

a)
3x - 2 = 10
3x = 10 + 2
3x = 12
x = 12/3
x = 4

b)
2x - 1 = x + 2
2x - x = 2 + 1
x = 3