Question

responda as equações:
a) 4x+6=2x+30
b) 3x-9=5x+31

Answer 1

a) 4x+6=2x+30
4x-2x=30-6
2x=24
x=12

b) 3x-9=5x+31
3x-5x=31+9
-2x=40
x=40/-2
x=-20

Answer 2

a) 4x+6=2x+30

4x - 2x = 30 - 6
2x = 24
x = 24/2
x = 12

b) 3x-9=5x+31

3x - 5x = 31 + 9
-2x = 40
x = 40/(-2)
x = -20