Question

A)15=x+20 B) 4=X-10 C)7=x+12 D)0=X+12 E)-3=x+10 equacoes sendo U = Q

Answer 1

15=x+20

x=15-20

x=-5

b) 4=x-10

4+10=x
14=x
x=14

c) 7=x+12
x=7-12

x=-5

d) 0=x+12

x=-12

e)-3=x+10

-3-10=x
-13=x