Question

Solve each equation by elimination

`x + y = 8 \\ x - y = 10`
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Answer 1

The solution is x = 9, y = -1.

Explanation:

x + y = 8

x - y = 10 Adding to eliminate y:

2x + 0 = 18

x = 9 Substituting x = 9 into the first equation:

9 + y = 8

y = 8 - 9

y = -1..