Question

What is the solution to the following system of equations?

y + x = 43

y − x = −12

Answer 1

• (27.5, 15.5)

Explanation:

Given

• y + x = 43
• y − x = −12

Solution

Sum up the equations:

• y + x + y - x = 43 - 12
• 2y = 31
• y = 31/2
• y = 15.5
• x = 43 - 15.5 = 27.5