Question

The simplified form of 6ab + 14a - 2ab + 3a is:

A) 21ab B) 4ab + 11a C) ab + 7a D) 4ab + 17a E) 4 + 17a

the solution to the equation 2x - 3 = 7 is:
A) x = 2 B) x = -5 C) x = 5 D) x = 6.5 E) x = 0.5

the solution to
`(x)/(3) -1 =4` is:
A) x = 13 B) x= 7 C) x = 9 D) x = 15 E)
`x=(5)/(3)`

the expanded form of 3(2y - 1) is:
a) 6y - 3 b) 5y - 1 c) 6y - 1 d) 6y + 2 e) 3y - 3

an equivalent equation to 5x = 2x + 9 is:
a) 2x = 5 b) 3x = 9 c) 0 = 3x + 9 d) 7x = 9 e) x = 9

the solution to the equation 2(x - 3) = 7 is:
a) x = 5 b) x =
`(13)/(2)` c) x = 2 d) x =
`(1)/(2)` e) x =
`(7)/(3)`

Eli is x years old. his sister is 2 years older. the sum of their ages is 22. a simplified equation to represent this is:
a) x + 2 = 22 b) 2x + 2 = 22 c) 2(x + 2) = 22 d) x(x + 2) = 22 e) 2x = 22

if A =
`(1)/(2)`bh with A = 360 and h = 40, then the value of b is:
a) 90 b) 4.5 c) 20 d) 18 e) 9

Answer 1

2) x=5

4) 6y-3

Explanation:

2) 2x-3=7

Add 3 on both sides (-3+3 cancel each other out and 7+3 is 10)

Now your equation is 2x=10

Divide 2 from both sides

2x/2 cancel each other and 10/2 is. Therefore, x=5

4) 3(2y-1)

3 times 2y is 6y

3 times -1 is -3 (negative times positive is negative)

Equation: 6y-3