Question

нужно решение В1 и В2. Срочно

Answer 1

B1 3/4 = 0.75
0.75 * 32% = 0.24

B2 у - 4/7у =  4.2
1у -4/7у = 4.2
3/7у = 4.2 
у = 4.2 : 4/7
у=1.8

Answer 2

1) 7/7y-4/7y=4.2, 3/7y=4.2, y=9.8. 2) 3/4-100%, x-32%; 3/4*32/100=0.24