20=-4v+8(v+7)

Answer 1

Multiplying out the brackets gives:

20 = -4v + 8v + 56

Simplifying by adding the like terms 8v and -4v:

20 = 4v + 56

Subtracting 56 from both sides:

-36 = 4v

Dividing both sides by 4:

v = -9

Therefore, the solution to the equation is v = -9.

Answer 2

-4y+28=6(y-7)

Answer 3

Expanding the brackets gives:

-4y + 28 = 6y - 42

Simplifying by adding 4y to both sides:

28 = 10y - 42

Adding 42 to both sides:

70 = 10y

Dividing both sides by 10:

y = 7

Therefore, the solution to the equation is y = 7.

Answer 4

Solve for .
Simplify your answer as much as possible.
-4(u-7)=4u-4

Answer 5

Expanding the brackets gives:

-4u + 28 = 4u - 4

Simplifying by adding 4u to both sides:

28 = 8u - 4

Adding 4 to both sides:

32 = 8u

Dividing both sides by 8:

u = 4

Therefore, the solution to the equation is u = 4.

Answer 6

8w-19=5(w-8)

Answer 7

Expanding the brackets gives:

8w - 19 = 5w - 40

Simplifying by subtracting 5w from both sides:

3w - 19 = -40

Adding 19 to both sides:

3w = -21

Dividing both sides by 3:

w = -7

Therefore, the solution to the equation is w = -7.