Question

Calcule o valor de x nas proporções

a) x+3/4=×+9/7

b) ×+5/5=3×-5/10

c) ×+3/3=20/6

Ajude-me pfv

Answer 1

A)X+3/4=X+9/7➡3+4x=9+7x➡-6=3x➡X=-2

B)X+5/5=3x-5/10➡5x+5=30x-5➡10=25x➡X=10/25➡2/5

C)X+3/3=20/6➡6x+6=20➡X=14/6➡X=7/3