one step equations
7+x=3
x=4
3x + 11 =26
x=5
2(x-7) =21
x=17.5
Simplify. 24x - 19x
5x
WRITE AN EQUATION & SOLVE:
Julie is 3 years older than her sister. Julie's age is 11 years old. How old is her sister?
x + 3 = 11
x = 8
Julie's sister is 8 years old.
n-5=9
n=14
2x+15=23
x=4
20=4−3c
6
Simplify. 8b + 3b
11b
Mr. Cushman bought 7 Hannah Montana t-shirts for a total of $90.93. Each t-shirt cost the same amount. How many Hannah Montana t-shirts did Mr. Cushman buy?
x - # of t-shirts
7x = 90.93
x = 12.99
Each t-shirt cost $12.99
5x=31
x=6.2
2x−23=8
x=15.5
Simplify. 2（b - 4)
2b -8
Tyler has 4 boxes of apples. Each box has the same number of apples. After Tyler eats 3 apples, there are 109 apples left in the boxes. How many apples were in each box?
x - # of apples in each box
4x - 3 = 109
x = 28
There were 28 apples in each box.
18➗x=8
x=2.25
9k-1.5✖4=21
k=3
Simplify. 3 + 5(a + 4)
5a + 23
8x=1440
x=180
3x+7-x=12
x=2.5
Simplify. 7(t + 8.5) - 5t + 4
2t + 63.5