How to subtract integers - ACT Math
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On an airline flight of 250 people there is a choice of pasta, salad, or pizza for dinner. If 113 passengers choose pasta and 30% choose salad, how many passengers choose pizza?
On an airline flight of 250 people there is a choice of pasta, salad, or pizza for dinner. If 113 passengers choose pasta and 30% choose salad, how many passengers choose pizza?
30% of 250 is 75. Therefore, 250 – 75 – 113 = 62
30% of 250 is 75. Therefore, 250 – 75 – 113 = 62
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At a store, a t-shirt costs 
. If Shane bought 
t-shirts and shoes from the store for 
, how much were the shoes?
At a store, a t-shirt costs
If one shirt costs 
, then two shirts must cost 
. The difference of the total and this number is the cost of the the shoes.
If one shirt costs
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is equivalent to which of the following?
To answer this question, we must remember how to distribute a negative when we are subtracting an entire expression.
To distribute a negative, you change the sign of everything within the expression being subtracted from positive to negative or negative to positive. You then add the resulting expression. So, for this data:
We can then add the like expressions normally (combine 
with 
, 
with 
, and 
with 
). Therefore, for this data:
Therefore, our answer is 
.
To answer this question, we must remember how to distribute a negative when we are subtracting an entire expression.
To distribute a negative, you change the sign of everything within the expression being subtracted from positive to negative or negative to positive. You then add the resulting expression. So, for this data:
We can then add the like expressions normally (combine
Therefore, our answer is
Compare your answer with the correct one above