Question

preciso de ajuda pf​

Answer 1

Resposta:

1) 6+2-4+5 = 9

2) 3+1+4+2-5+5 = 10

3) (-2) - (+8) + (+4) = (-2) - 8 + 4 = -6

4) 3x+1 = 6+5x+5 ∴ -2x = 6+5-1 ∴ -2x = 10 ∴ x = -5

5) 8+6x+12 = x-4-3x ∴ 6x-x+3x= -4-8-12 ∴ 8x= -24 ∴ x=-3