3x+4-5x+15
-2x+19
Solve for x:
4(x+5)=32
x=3

Determine the perimeter
2(4x+8)+2(2x+3)
8x+16+4x+6
12x+22
John averages 75 rushing yards each game, but one game he was 15 yards short of his average. He's played a total of 8 games. How many total rushing yards has John ran this season?
75(8)-15=585 yards
2(3x)+5-4x+2
2x+7
2(4x+32)=120
x=7
Determine the perimeter when x=2

2x= 2(2)= 4
x+7= 2+7= 9
2x+8= 2(2)+8= 12
5x+4= 5(2)+4= 14
4+9+12+14+10= 49
You bought a magazine for $5 and four erasers. You spent a total of $25. How much did each eraser cost?
5+4x=25
4x=20
x=$5
4(x+3)-x-6
3x+6
Solve for x:
(2x)(4+9)=312
x=12
Determine the area of the following rectangle.

48x+24
Aliyah had $24 to spend on seven pencils. After buying them she had $10. How much did each pencil cost?
7x+10=24
7x=14
x=$2
3(6x+2)+(-2x+4)
16x+10
-6(2x-32)= 84
x=9
Determine the perimeter

8x+56
For a field trip 4 students rode in cars and the rest filled nine buses. How many students were in each bus if 472 students were on the trip?
9x+4=472
9x=468
x=52
-2(-2x-4)-(-6x-5)
-2(-2x-4)-(-6x-5)
4x+8+6x+5
10x+13
2(4x+3)-23x-24+12x=-33
x=5
Determine the area

20(2x+1)+6(4x+2)
40x+20+24x+12
64x+32
Sumalee won 40 super bouncy balls playing horseshoes at her school's game night. Later, she gave two to each of her friends. She only has 8 remaining. How many friends does she have?
2x+8=40
2x=32
x=16