Question

Resolva as equações:
a) 3x+9=18
b) 2x+8=-4x+20
c)5x10=15x+50

Preciso urgente!

Answer 1

a) 3x=18-9
3x=9
x=9/3
x=3
b) 2x+4x=20-8
6x=12
x=12/6
x=2

Answer 2

a) 3x+9=18
3x=18-9
3x=9
x=9/3
x=3

b)2x+8=-4x+20
2x+4x=20-8
6x=12
x=12/6
x=2

c)5x+10=15x+50
5x-15x=50-10
-10x=40
x=40/-10
x=4