Question

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

Answer 1

• 3 and 7

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