Question

x+200+100+115+80=720

Answer 1

Resposta:

x= 225

Explicação passo-a-passo:

x+300+195 = 720

x+495 = 720

x = 720 - 495           (495 = 200+100+115+80)

x = 225

Prova real

225+200+100+115+80=720

425+215+80=720

640+80=720

720=720