Question

Resolva as equações a)x+4=13 b)4+x=7 c)8=3+x d)x+18=11

Answer 1

A) x=13-4
     x=9

B)X=7-4
    X=3

C) X=11-18
     X=-7

Answer 2

X+4=13
X=13-4
X=9

4+x=7
X=7-4
X=3

8=3+x
-x=3-8
-x=-5
X=5

X+18=11
X=18-11
X=-7