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Softa [21]
3 years ago
11

Choose the expression that mathematically represents the difference between ‘3 times a number’ and the quantity ‘5 times another

number less 7’
a. 3x − (7 − 5x)
b. 3x − (5y − 7)
c. 3x − (5x − 7)
d. 3x − (7 − 5y)
Mathematics
1 answer:
Trava [24]3 years ago
4 0

Answer:

b. 3x - (5y -7)

Step-by-step explanation:

Let x represent "a number". Let y represent "another number."

The "3 times a number" is represented by 3x.

And "5 times another number less 7" is represented by 5y -7.

The difference between these quantities is the second subtracted from the first:

... 3x - (5y -7) . . . . matches selection b.

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