Question

решите уравнение (х+7)-12=42, 115-(35+у)=39,z-35-64=16,28-t+35=53.

Answer 1

x+27-12=42
x+27=54
x=54-27x=27

115-(35+y)=39
35+y=115-39
35+y=76
y=76-35
y=41

z-35-64=16
z=16+35+64
z=115