1. Solve for X

4(x - b)=x

A. b= 4/3x
B. b=3/4x
C. b= 4/3b**
D. b= 3/4b

2. Solve for y, then find the value of y when given x = 2
6x= 7-4y

A. -12**
B. 7/4
C. 19/4
D. 24

3. Solve for h
A = 1/2bh

A. h= 2a/b
B. 2a = b/h
C. h = 1/2 ab**
D. h = 2ab

1.

4 ( x - b ) = x

4 x - 4 b = x

Add 4 b to both sides

4 x = x + 4 b

Subtract x to both sides

3 x = 4 b

Divide both sides by 3

x = 4 / 3 b

2.

6 x = 7 - 4 y

Replace x with 2

6 ∙ 2 = 7 - 4 y

12 = 7 - 4 x

Subtract 7 to both sides

5 = - 4 x

- 4 x = 5

Divide both sides by - 4

x = - 5 / 4

None of the answers offered.

But if x = - 2 then:

6 x = 7 - 4 y

Replace x with - 2

6 ∙ ( - 2 ) = 7 - 4 y

- 12 = 7 - 4 x

Subtract 7 to both sides

- 19 = - 4 x

- 4 x = - 19

Divide both sides by - 4

x = 19 / 4

3.

A = 1/2 b h

Multiply both sides by 2

2 A = b h

Divide both sides by b

2 A / b = h

h = 2 A / b