Find two numbers with a sum of -66 and a difference of -116. x = one number
y = other number x + y = -66 {sum is -66} x - y = -116 {difference is -116} ------------ 2x = -182 {added the two equations together} x = -91 {divided both sides by 2} x + y = -66 {top equation} -91 + y = -66 {substituted -91, in for x, into top equation} y = 25 {added 91 to both sides} Two numbers are -91 and 25 *To check* -91 + 25 = -66 {sum is -66} -91 - 25 = -116 {difference is -116} © Algebra House
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