Question

Modelo: 2+X=/ 2+7=9 X=7

Perguntas:

A)4+x= X=6
B)X-1= X=10
C)3+1+x= X=-1
D)X-2= X=-6

Answer 1

a) x=6
4 + x
4 + 6
10


b) x = 10
x - 1
10 - 1
9


c) x = -1
3 + 1 + x
3 + 1 + (-1) > elimina-se os opostos (1 e -1):
3

d) x = -6
x - 2
-6 -2
-8