Question

Реши уравнение: а)7у-39=717 б)х+3х=76

Answer 1

7у= 717+39
7у=756
у=756/7
у=108

х+3х=76
4х=76
х=76/4
х=19

Answer 2

a)7y=717+39
7y=756
y=756:7
y=108
7*108-39=717
б)4x=76
x=76:4
x=19