question Solve for x 37 18 873 18 x 8

If 2�−3=132x−3=13, what is the value of �x?

A. 5
B. 7
C. 8
D. 10

If �+7=20a+7=20, what is the value of �a?

A. 10
B. 11
C. 12
D. 13

If 5�+2=275u+2=27, what is the value of �u?

A. 4
B. 5
C. 6
D. 7

The average of three numbers is 15. If two of the numbers are 12 and 18, what is the third number?

A. 14
B. 15
C. 16
D. 17

What is the sum of the angles in a rectangle?

A. 90∘90∘
B. 180∘180∘
C. 270∘270∘
D. 360∘360∘

Solve for �x: 35(20−�)=953(20−x)=9

A. �=6x=6
B. �=8x=8
C. �=10x=10
D. �=12x=12

If �2=64x2=64, what is the value of �x?

A. 6
B. 8
C. 10
D. 12

If 3�−2=133z−2=13, what is the value of �z?

A. 4
B. 5
C. 6
D. 7

If 2�+7=212r+7=21, what is the value of �r?

A. 6
B. 7
C. 8
D. 9

Solve for �x: 49(18−�)=894(18−x)=8

A. �=3x=3
B. �=6x=6
C. �=9x=9
D. �=12x=12