Question

реши уравнение x*7-500=60, y:3+70=970

Answer 1

x*7-500 = 60
x*7 = 500+60
x*7 = 560
x=560:7
x=80

y:3+70=970
y:3 = 970 - 70
y:3 = 900
y=900*3
y = 2700