Question

A) 3+×=7


B)12-7+4×=25

Answer 1

Resposta:

a) 3+x=7

3+x=7

x=7-3

x=4

b) 12-7+4x=25

4x=25+12-7

4x=37-7

4x=30

x= 30

4

x= 7,5