The sum 8

The sum of two numbers is 21. If three times the smaller numbers is two less than twice the larger number, find the two numbers.

Correct answer:

a =  8
b =  13

Step-by-step explanation:


a+b=21
3a = 2b-2

a+b=21
3•a = 2•b-2

a+b = 21
3a-2b = -2

a = 8
b = 13

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