Question

решите уравнения: 28+(45+х)=100;. (у-25)+18=40;

Answer 1

28+(45+x)=100;
28+45+x=100;
73+x=100;
x=100-73;
x=27

(y-25)+18=40;
y-25+18=40;
y-7=40;
y=40+7;
y=47

Answer 2

1)28+45+х=100
х=100-28-45
х=27
2)y-25+18=40
y=40-18+25
y=47