Question

Решите уравнение а) 35 + x =45 б) y - 27 = 67 в) 1125 - k = 725 г) d + 29 = 19 +79

Answer 1

a) 3/5 + x = 4/5; x = 4/5 - 3/5; x = 1
b) y - 2/7 = 6/7; y = 6/7 + 2/7; y = 8/7
c) 11/25 - k = 7/25; -k = 7/25 - 11/25; -k = -4/25; k = 4/25
d) d + 2/9 = 1/9 + 7/9; d = 1/9 + 7/9 - 2/9; d = 6/9 = 2/3