Question

mim ajudem por favor!!urgente​

Answer 1

a)2x+3=9

2x=9-3

2x=6

x=6/2

x= 3

b)-3x+5=x+1

-3x-x=1-5

-4x=-4

x=-4/-4

x=1

c)6x=-x+16

6x+x=16

7x=16

x=16/7

d)9x-9+3x=15

9x+3x=15-9

12x=6

x=6/12=3/4

e)5x+4=3x-x+3

5x-3x+x=3-4

3x=-1

x=-1/3

f)7x+8-3x=20-4x+1

7x-3x+4x=20+1-8

8x=13

×=13/8