Question

Qual é o termo que colocando no lugar de × ,torna verdadeira as sentencas
a- x+9=13
b- x-7=10
c- 5× -1=9
d x-3=8

Answer 1

a- x+9= 13
x= 13-9
x= 4

b- x-7=10
x= 10+7
x= 17

c- 5x-1= 9
5x= 9+1
5x= 10
x= 10/5
x= 2

d- x-3= 8
x= 8+3
x= 11

Answer 2

a)x+9= 13
x= 13-9
x= 4
b)x-7=10
x= 10+7
x= 17
c)5x-1= 9
5x= 9+1
5x= 10
x= 10/5
x= 2
d) x-3= 8
x= 8+3
x= 11