Question

Реши уровнения и выполни проверку. Х•(75:5)=60. 15•3:х=9. k+120:4=500

Answer 1

$x times (75 div 5) = 60 \ x times 15 = 60 \ 15x = 60 \ x = 4 \ 4 times (75 div 5) = 60$

$15 times 3 div x = 9 \ frac{15 times 3}{x} = 9 \ frac{45}{x} = 9 \ x =5 \ 15 times 3 div 5 = 9$

$k + 120 div 4 = 500 \ k + 30 = 500 \ k = 470 \ 470 + 120 div 4 = 500$