800-(1348-х)=104 28у+53у-45у-354=516

Question

800-(1348-х)=104
28у+53у-45у-354=516

Answer 1

800-(1348-х)=104
1348-х=800-104
1348-х=696
х=1348-696
х=652
Ответ- х=652

Answer 2

1)800-(1348-x)=104
1348-x=800-104
1348-x=696
x=1348-696
x=652
28y+53y-45y+354=516
36y=516-354
36y=162
y=162:36
y=4,5