Question

a)6x - x = 110

b) - x + 6x = 70 + 4x - 90

c) 130 - 5x + 9x = 170

D) 1,6x - 1,2x =6,4 - 6

e) 100 - 120 - 4x = 0

f) 70 - 100 + 2y - 6y + 5y = 2y - 6y + 30 - 50 - 80 - 100

alguém pode me ajudar a resolver pfv rrsrs

Answer 1

Resposta:

a)6x-x=110

5x=110

x=110

5

×=22

b)-x+6x=70+4x-90

-x×6x-4x=70-90

6×-5x= - 20

x= -20

c)130-5x+9x=170

-5x+9x=170-130

4x=40

x=40

4

x= 10

d)1,6x-1,2x=6,4-6

0,4x=0,4

x=0,4

0,4

x=1

e)100-120-4x=0

-4x=120-100

-4x=20

4x= -20

x= -20

4

x= -5

f)70-100+2y-6y+5y=2y-6y+30-50-80-100

2y-6y+5y-2y+6y=30-50-80-100-70+100

5y=150-300

5y= -150

y= -150

5

y= -30