Question

porfavor ajudem aqui

Answer 1

c)


x + x + 100 = 500
2x + 100 = 500
2x = 500 - 100
x = 400÷ 2
x = 200 gramas



D)


x + 300 = 5x
x - 5x = -300
-4x = -300
x = -300÷ -4
x = 75 gramas