Question

1) resolva
a)x-3=5
b)x+2=7
c)x-7=-7
d)x-109=5
e)15=x+1
f)x/2+x/4=2
g)0=x+12

Answer 1

A)X - 3 = 5

5 + 3 = x

8 = x

B) x+2= 7

7 + 2 = x

9 = x

C) x - 7 = -7

7 + 7 = x

14 = x

D) x - 109 = 5

109 + 5 = x

114 = x

E) 15 = x + 1

15 + 1 = x

16 = x

F) x/2 + x/4 = 2

2 + 4 + 2 = x + x

8 = 2x

G) 0 = x + 12

12 + 0 = x

12 = x