Question

Решите уравнения срочно

Answer 1

x = (3/4)*(4/25) / (4/5) = (3/25) * (5/4) = 3/20

y = (13/5) * (9/2) / (39/5) = (117/10) * (5/39) = 3/2 = 1 1/2

Answer 2

a) Решаем пропорцией
х= 3/4×4/25 : 4/5
х=3/25:4/5
х=3/20
б) решаем пропорцией
у= 4 1/2× 2 3/5 : 7 4/5
у= 9/2×13/5 : 39/5
у= 117/10 : 39/5
у= 117/10×5/39
у= 117/78
у=1 39/78
у=1 1/2