Question

5.(×-2)+6.(×-3)+7.(×-4)+8.(×-5)=800
Mim ajudem pfv

Answer 1

Resposta:

× = 448/13

Explicação passo a passo:

5.(×-2) + 6.(×-3) + 7.(×-4) + 8.(×-5) = 800

5× + 5.(-2) + 6× + 6.(-3) + 7× + 7.(-4) + 8× + 8.(-5) = 800

5× + (-10) + 6× + (-18) + 7× + (-28) + 8× + (-40) = 800

5× - 10 + 6× - 18 + 7× - 28 + 8× - 40 = 800

26× - 10 - 18 - 28 - 40 = 800

26× -(10 + 18 + 28 + 40) = 800

26× -96 = 800

26× = 800 + 96

26× = 896

26× / 2 = 896 / 2

13× = 448

× = 448/13