Penjelasan dengan langkah-langkah:

9a × 3

27a

(-5) × 8x

- 40x

- 0,6y × 4

- 2,4y

12 × 4/3y

16y

- 3×(a+7)

- 3a + 21

(6x-5) ×4

24x - 20

4x + 5(2x - 7)

4x +10x-35

14x-35

14x=35

x=35/14

2,5

7(2a-1)+6(- 3a+2)

14a-7-18a+12

14a-18a-7+12

- 4a + 5

- 4a=-5

a=-5/-4

a=5/4

a=1,25

-(4a+7)+3(a+5)

(- 4a+7)+3a+15

- 4a+3a+7+15

- a+22

- a= -22

a=22

9x-2(x - 8)

9x- 2x+16

7x +16

7x=-16

x=-16/7

x= - 2,28

8(y - 1)- (7y +2)

8y-8-7y+2

8y-7y-8+2

y- 5

y= 5

-5 (x - 1)-4 (2x+1)

- 5x+5-8x-4

- 5x-8x +5-4

- 13x +1

- 13x= -1

x= 1/13

x=0,0769

6(2a+4)-8(3-a)

12a+24-24+8a

12a+8a+24-24

20a+0

20a=0

a=20