Question

4) 2x +3 (x + 2) = 3 x + 18

5) 2 (x + 1) - 3 (2x - 5) = 6x - 3

Answer 1

1)
2x+3x+6=3x+18
2x+3x-3x=18-6
2x=12
x= 12/2
x=6

2)
2x+2-6x+15= 6x-3
2x-6x-6x= -3 -2-15
-10x= -20
x= -20/-10
x= -2

Answer 2

4) 2x +3x +6=3x +18 6x -3x = +18 -6 3x = +12 x = 12 ____ 3 x = 4 S{4} 5) 2x +2 -6x +15 = 6x -3 -4x -6x = -17 -3 -10x = -20 . (-1) 10x = 20 x = 20 ______ 10 x = 2 S{2} Espero ter ajudado!