Question

Alguém pode resolver pra mim ? Por favor!

Answer 1

a) 5x-2x=25-7

3x=18

x= 6

b)9x + x = 46+4

10x= 50

x = 5

c)  2x +10 -15 + 3x=5

5x=5-10+15

5x=10

x=2

d)2x + 10 = 21 -6x

8x = 21-10

8x= 11

x = 11/8

e)5x-30+x=4x-12

x=-12+30

x=18

f)(4x+8+10x-2)/12=(12x+18)/12

14x/12 + 6/12= 12x/12+18/12

14x/12-12x/12=18/12-6/12

2x/12=12/12

x/6=1

x=6

g)(9x+3-10x-15)15 - (15x-60)/15=0

-16x+48=0

48=16x

x=48/16

x = 3