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
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 answer
1 answer