1. 34b + b = b*(34 + 1) = 35b
43a - a = a*(43 - 1) = 42a
8x + 16x + 19x = x*(8 + 16 + 19) = 43x
14c + 17c + 9 = c(14 + 17) + 9 = 31c + 9
69p - 13p + 37 = p(69 -13) + 37 = 56p + 37
14a - 8a +45 + a = a(14 - 8 + 1) + 45 = 7a + 45
2. 18y - 12y +4y -172 = y(18 -12 +4) - 172 = 10y - 172 при y = 180
180*10 - 172 = 1800 - 172 = 1828
3. 11x + 8x = 456
19x = 456
x = 24
y + 27y = 1204
28y = 1204
y = 43
14x - x - 28 = 167
13x = 195
x = 15
8(x -13) = 48
8x - 104 = 48
8x = 152
x = 19
703 - (652-x) = 566
51 + x = 566
x = 515
4. 128 = 38*2 + 2*x
2*x = 128 - 76
2x = 52
x = 26
S = 26*38 = 208 + 780 = 988
5. 45\9 = 5 - вторая сторона
p = 2*45 + 2*5 = 100
s = 45*5 = 225
6. 2 + 6 = 8 кг вся смесь
55.25 * 8 = 442
2*65 = 130 - цена 2 кг одного
442 - 130 = 312 - цена 6 кг мокко
312\6 = 52 руб\кг
7. а) у*5
б) 4*5у = 2*у + 270