Question

Gente preciso urgente...
a) 10(×+1)-5(×-2)=?

b) 5(×+2)-10=?

c) 7(2+×)=?

Answer 1

Explicação passo-a-passo:

a) 10. (x + 1)-5. (x - 2)

10x +10 -5x +10

10x - 5x +10 + 10

5x +20

5x = -20

x = -20/5

x = -4

b) 5.(x + 2) -10

5x + 10 -10

5x = 0

x = 0/5

x = 0

c) 7.(2 + x)

14 + 7x = 0

7x = -14

x = -14/7

x = -2