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24-07-2021
Mathematics

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The sum of two numbers is 10. Five times the first number plus three times the second number is 36

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mhanifa mhanifa

24-07-2021

Answer:

3 and 7

Step-by-step explanation:

a + b = 10
5a + 3b = 36

5 times the first equation minus the second one:

5(a + b) - 5a - 3b = 5(10) - 36
2b = 14
b = 7

Find a:

a + 7 = 10
a = 3

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