Question

Умножение одночлена на многочлен. Помогите пж!

Answer 1

$3) \ 1) - 8(11 - 2x) + 40 = 3 times (5x - 4) \ - 88 + 16x + 40 = 15x - 12 \ - 48 + 16x = 15x - 12 \ 16x - 15x = - 12 + 48 \ 1x = 36 \ x = 36$
$2)2x - 12(3 - x) = 1 + 3(x + 2) \ 2x - 36 + 12x = 1 + 3x + 6 \ 14x - 36 = 7 + 3x \ 14x - 3x = 7 + 36 \ 11x = 43 \ x = 3.9$
$3) frac{7y - 2}{4} - frac{4y - 5}{3} = - frac{4}{3} \ 3(7y - 2) - 4(4y - 5) = - 16 \ 21y - 6 - 16y + 20 = - 16 \ 5y + 14 = - 16 \ 5y = - 16 - 14 \ 5y = - 30 \ y = - 6$

Answer 2

Сорян второе не понела

Answer 3

1.

1.

11*(-8)-2x*(-8)+40=(3)5x-4(3)

-88+16x+40=15x-12

-88+40+12=15x-16x

-32=-1x

x=32

2.

2x-12(3)-12(-x) = 1 + 3(x)+3(2)

2x-36+12x = 1+3x+6

2x+12x-3x = 6+1+36

11x=43

x=$frac{43}{11}$=3$frac{10}{11}$

Ответ:3$frac{10}{11}$

3.$frac{7y-2}{4}3 -frac{4y-5}{3}4=-frac{4}{3} \frac{21y-6}{12} -frac{16y-20}{12} = -frac{4}{3}  \frac{21y-16y+20-6}{12} = -frac{4}{3} \frac{5y+14}{12} = -frac{4}{3} \frac{5y+14}{12} +frac{4}{3}4 \frac{5y+14}{12}+frac{16}{12}= frac{5y+14+16}{12} = frac{5y+30}{12}$

Answer 4

А 4?

Answer 5

Короче , там прост докажи тождество