One Step Equations
Solve: 3x=12
x=4
Evaluate the expression 2(3x+1) when x=3.
20
You have $40 to spend on diapers. Write an equation to represent how many packs of diapers you can buy, x, if each pack costs $8.
8x=40
Write an equivalent expression. Draw a rectangle if it helps your thinking:
2(4x+1)
8x+2
Solve: x+5=13
x=8
Solve: x-4.2=5.1
Evaluate the expression 1/2(4x+8) when x=1
6
Last Friday, Trevon had $29. Over the weekend he received some money for cleaning the attic. He now has $41. Write an equation to represent how much money he received for cleaning the attic, x.
29+x=41
Write an equivalent expression. Draw a rectangle if it helps your thinking:
7(2x+3)
14x+6
Solve: x-7=21
x=28
Solve: x/3=5
x=15
Evaluate the expression 5x+6 when x=6
36
At a restaurant, Mike and his three friends each paid the same amount of money for the final bill. The total bill was $72. Write an equation to determine how much money each person paid, x.
4x=72
Which expression is equivalent to 4(x+3)?
A. 4x+12
B. 4x+3
C. 3(x+4)
D. 4x+7
A. 4x+12
Solve: 6.1x=12.2
x=2
Solve: x+5.2=9.3
x=4.1
Evaluate the expression 8(x-1) when x=3
16
Lisa is cooking muffins. The recipe calls for 7 cups of sugar. She has already put in 2 cups. Write an equation to represent how many more cups, x, she need to put in.
x+2=7
Write an equivalent expression: 4(2x+6)
8x+24
Solve: x/7=10
x=70
Megan gave away $5 to her friends this week. $3 to Maggie and x dollars to Neela. Which equation represents this situation?
A. 3x=5
B. 5+3=x
C. 3+x=5
D. 5x=3
C. 3+x=5
Evaluate the expression 2/3(3x-9) when x=3
0
Last week, Julia ran 30 miles more than Nick. Julia ran 40 miles. Write an equation to represent how many miles Nick ran, x.
40=30+x
Simplify: 12(5x+6)
60x+72
Molly sold bracelets for $8 per bracelet and made a total of $180. Write an equations for the number of bracelets, x, Molly sold.
8x=180