Question

ayudaaa porfavor es para hoyyy​

Answer 1

a) 4x=18+2

4x=20

x=20/4

x=5

b)7x=3+4

7x=7

x=7/7

x=1

c) 2(x+3)=x+9

2x+6=x+9

2x-x=9-6

x=3

d) 2(x-4)-4=8

2x-8-4=8

2x=8+8+4

2x=20

x=20/2

x=10

Parte II

a) 2x-15=7

2x=15+7

2x=22

x=22/2

x=11

(x/2+x=45)2

x+2x=90

3x=90

x=90/3

x=30

(1/3x-1=2)3

x-3=6

x=3+6

x=9

Espero te sirva