Question

quanto é:
a)-x-12=-1
b)5(b+3)-2=-b+23
c)7y-1,5=25-(y+1,5)

Answer 1

Explicação passo-a-passo:

a)-x-12=-1

-x=11 multiplique por -1

x=-11

b)5(b+3)-2=-b+23

5b+15-2=-b+23

6b=-13+23

6b=10

b=10/6

c)7y-1,5=25-(y+1,5)

7y-1,5=25-y-1,5

8y=25

y=25/8