2х*62,5-32,5=42,5 и 5*(4,2+3,2х)=53

Question

2х*62,5-32,5=42,5 и 5*(4,2+3,2х)=53

Answer 1

2x*62,5-32,5=42,5
125x-32,5=42,5
125x=42,5+32,5
125x=75:125
x=75/125=3/5
5*(4,2+3,2x)=53
21+16x=53
16x=53-21
16x=32:16
x=2