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6.8 = 2.89 + m
m = 3.91
d - 2.9 = 2.5
d = 5.4
If 6 + 2 = 8, does 6 + 2 +3 = 8 + 3
Why or why not?
Yes, 3 was added to both sides
8x = 64
x = 8
Write an inequality for the following:
The value v, of the hat is at least $9.
v greater than or equal to 9
You start with the equation 8x = 24, your friend changes the equation to 8x = 24 /4.
How can you change your friends equation equivalent to the original equation? What step are they missing?
Divide the left side of the equation by 4
c - 8 = 25
c = 33
If 8 - 1 = 7, does 8 - 1 - 2 = 7 - 3
Why or why not?
No, unequal amounts are subtracted from each side of the equation
x + 21.9 = 27.1
x = 5.2
Hank has at least $7.15
h greater than or equal to $7.15
m - 28 = 21
What is the first step to solve this equation?
Isolate the variable, add 28 to both sides of the equation.
2y = 30
y = 15
If 4 + 6 = 10, does 4 + 6 x 3 = 10 x 3
Why or why not?
Yes, both sides of the equation were multiplied by 3
2,448 / 48 = x
x = 51
The first bookcase a, in a library can hold one less book than the second bookcase. The second bookcase holds 2,492 books. Write an inequality to represent the number of books the first bookcase can hold.
a < 2,492
Name the property of equality that this equation represents
(6 + 3) - 3 = 9 - 3
13.4 - g = 8.1
If 5 + 4 = 9, does (5 + 4) /3 = 9 / 4
Why or why not?
No, both sides of the equation were not divided by the same number
3/4 x = 12
x = 16
Gabe has 6 more baseball cards than football cards. He has fewer than 125 baseball cards. Write an inequality for the number of football cards, f, he has
f < 119
Name the property of equality this equation represents
( 6 + 3 ) x 3 = 9 x 3
Multiplication Property of Equality
f - 13.2 = 28.9
f = 42.1
If 6 + 4 = 10 , does 6 + 4 + 5 = 10 + 3 + 2
Why or why not?
Yes, both sides of the equation were added by 5 ( 3 + 2 = 5)
14x = 73.5
x = 5.25
The least amount of water that hikers must bring is 45 ounces
w greater than or equal to 45 ounces