9. 1.9 y + 2.8 - 6.7 = 36.4
1.9 y - 3.9 = 36.4
1.9 y = 36.4 + 3.9
1.9 y = 40.3
y = 21 4/19 <- ( дроби )
9. 1.9 y + 2.8 - 6.7 = 36.4
1.9 y - 3.9 = 36.4
1.9 y = 36.4 + 3.9
1.9 y = 40.3
y = 21 4/19 <- ( дроби )