50-х=8,132-7,16
50-х=0,972
х=50-0,972
х=49,028
проверка
(50-49,028)+7,16=8,132
0,972+7,16=8,132
8,132=8,132
15-(35+5):4=5.
1) 35+ 5 = 40
2) 40: 4 = 10
3) 15-10=5
1487/42–146/35 = (7435–876)/210 =
= 6559/210 = 31 49/210
(6*у+14):2+15=40
(6*у+14):2=40-15
6*у+14=25*2
6*у+14=50
6*у=50-14
у=36:6
у=6