one step equations
7+x=-3
x=-10
3x + 26 =-13
x=-13
2(x-7) =21
x=7/2
WRITE AN EQUATION & SOLVE: Julie is 3 years older than her sister. Julie's age is 11 years old. How old is her sister?
n - Julie's sister's age n + 3 = 11 n = 8 Julie's sister is 8 years old.
n+2=9
n=7
2x+15=−3x
-3
20=4−3c
6
Mr. Cushman bought 7 t-shirts for a total of $90.93. Each t-shirt cost the same amount. How many Hannah t-shirts did Mr. Cushman buy?
n - # of t-shirts 7n = 90.93 n = 12.99 Each t-shirt cost $12.99
x−23=8
x=31
2g−4=6
g=5
−4(−3n−8)=10n+20
-6
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?
a - # of apples in each box 4a - 3 = 109 a = 28 There were 28 apples in each box.
9k=-27
k=-3
3y – 2 = 13
5
2(4−y)−3(y+3)=−11
2
Mr. Bucci goes to the grocery store and purchases 17 bags of raisins and a $2.97 jar of peanut butter. His total cost was $34.76. What was the cost for a bag of raisins?
r - cost of a bag of raisins 17r + 2.97 = 34.76 r = 1.87 Each bag of raisins cost $1.87
x+7=2
-5
2x-18=20
x=9
−(−8−3x)=−2(1−x)+6x
2
Consecutive numbers are numbers that follow one after another (like 5, 6, 7); if three consecutive numbers are n, n + 1, and n + 2 and their sum is 48, what are the numbers?
n + n + 1 + n + 2 = 48 n = 15 The integers are 15, 16, and 17.