Question

реши уравнение х+120=45×6 у×20=450+120+130 75÷у=800-725 450+а=570+430

Answer 1

1) x+120=45*6
x+120=270
x=270-120
x=150
2)y*20=450+120+130
20y= 700
y=700:20
y=35

3) 450+a=570+430
a=570+430-450
a=350