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3 years ago

What is the number that represents X in 12x + 5 = 8x + 21?

Mathematics

2 answers:

iren [92.7K]3 years ago

7 0

I hope this helps you

12x-8x=21-5

4x=16

x=4

mariarad [96]3 years ago

6 0

X is equal to 4 because:
-
Step 1: 12*4+5
Step 2: 48+5=53
This is the answer for the first equation, next, you find the answer to the next equation.
Step 3: 8*4+21
Step 4: 32+21=53
-
53 is equal to 53, therefore x=4.

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Keywords: Proportions, Conversion

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