Реши уравнения 15а-10а+45=95,8х+2х+60=100

Question

Реши уравнения 15а-10а+45=95,8х+2х+60=100

Answer 1

5a+45=95      5a=95-45  5a=50  a=50:5  a=10                                                                                                                                10x+60=100         10x=100-60     10x=40 x=40:10  x=4