Question

equação) a) X+x/5=12 b)x-x/7=-3

Answer 1

a) X+X/5=12

X+X=12•5
X+X= 60
2x=60
X=60/2
x= 30

b) x-x/7=-3

fzr o mmc

7x-x=-21
6x=-21
X=-21/6
X= -7/2