1) 8y 5 = 56 540y = 280y = 280 / 40y = 7
2) 146a - 97 = (9 26) 7146a - 97 = 234 * 7146a - 97 = 1638146a = 1638 + 97146a = 1735a = 1735 / 146a = 11.88 (округляем до двух знаков)a = 11.88
1) 8y 5 = 56 5
40y = 280
y = 280 / 40
y = 7
2) 146a - 97 = (9 26) 7
146a - 97 = 234 * 7
146a - 97 = 1638
146a = 1638 + 97
146a = 1735
a = 1735 / 146
a = 11.88 (округляем до двух знаков)
a = 11.88