Question

решить уравнение а:30 = 3/5,7/8 = 56/у, с : 70 = 5/7, 7/9 = х : 63​

Answer 1

а:30=3/5

а=3/5*30

а=18

7/8=56/у

у=56*8:7

у=64

с:70=5/7

с=5/7*70

с=50

7/9=х:63

х=7/9*63

х=49