Question

Реши уравнения. Проверь х÷(50×4)=3 с×(80×5)=800

Answer 1

x:(50·4) = 3

x:200 = 3

x = 3·200

x = 600.

600:(50·4) = 600:200 = 3

c·(80·5) = 800

c·400 = 800

c = 800:400

c = 2

2·(80·5) = 2·400 = 800