Is w = 8 a solution to the equation 5 + w = 58? Explain.
No; Sample answer: w = 8 is not a solution because 5 + 8 = 13.
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banana
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gift
Win 25 points!
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gift
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thief
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447 + h = 951
h = 504
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monster
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fairy
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shark
Other team loses 10 points!
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baam
Lose 25 points!
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25
A volunteer made m muffins for a bake sale. After selling 28 muffins, 21 muffins remained. The equation m - 28 = 21 represents the situation. What is the first step in writing an equivalent equation to solve m - 28 = 21?
Add 28 to each side of the equation.
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m - 28 = 21
m = 49
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a - 51 = 12
a = 63
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g - 8 = 25
g = 33
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eraser
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gift
Win 25 points!
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rocket
Go to first place!
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lifesaver
Give 25 points!
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25
Krystal says that you need to add to solve the subtraction equation y - 11 = 52. Is Krystal correct? Explain.
Yes; Addition is the inverse of subtraction. To find the value of y, add 11 to each side of the equation.
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15
r + 82 = 97
r = 15
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150 = e + 42
e = 108
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22 = 13 + a
a = 9
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25
This year, a rancher counted 225 horses on the range. This count is 22 fewer than last year. How many horses did the rancher count last year? Let h be the number of horses counted last year. Solve h - 22 = 225 to find the number of horses c