Question

Картка No1 5(3x-4)-5-3x-5-4=15x-20 -2(9+2x) + 3x=-2-9-2-2x+3x=-18 - 4x+ 3x=-18 - х 1.-3(2x+6)= 2. 7(x+4)= 3. -5(2x+5)- 4x= 4. | -2(3x-4)+6x= 5. | 4x+3(4x-3)= 3x+2(5x-4)= 6.
срочно ​

Answer 1

$- 3(2x + 6) = - 3 \times 2x - 3 \times 6 = - 6x - 18$

$7(x + 4) = 7 \times x + 7 \times 4 = 7x + 28$

$- 5(2x + 5) - 4x = - 5 \times 2x - 5 \times 5 - 4x = - 10x - 25 - 4x = - 14x - 25$

$- 2(3x - 4) + 6x = - 2 \times 3x - 2 \times ( - 4) + 6x = - 6x + 8 + 6x = 8$

$4x + 3(4x - 3) = 4x + 3 \times 4x + 3 \times( - 3) = 4x + 12x - 9 = 16x - 9$

$3x + 2(5x - 4) = 3x + 2 \times 5x + 2 \times ( - 4) = 3x + 10x - 8 = 13x - 8$

Answer 2

Ответ:

1. -3(2х+6)= -3 * 2х - 3 * 6= -6х - 18

2. 7(х+4)= 7 * х + 7 * 4= 7х + 28

3.-5(2х+5)- 4х= -5 * 2х - 5 * 5- 4х= -10х - 25 - 4х= -14х - 25

4.-2(3х-4)+6х= -2 * 3х - 2 * -4 + 6х= -6х + 8 + 6х = х + 8

5.4х+3(4х-3) = 4х + 3 * 4х + 3 * -3= 4х + 12х - 9= 16х - 9

6.3х+2(5х-4)= 3х + 2 * 5х + 2 * -4= 3х + 10х - 8= 13х - 8