Question

x+y=7;x-y=3 slove using elimination and substituition method

Answer 1

Answer:

Algebra Examples. Subtract y from both sides of the equation. x=7−y. x−y=3. Replace all occurrences of x in x−y=3 x - y = 3 with 7−y . x=7−y. (7−y)−y=3. Subtract y from −y . x=7−y. 7−2y=3. Replace all occurrences of y in x=7−y x = 7 - y with 2 . x=7−(2) y=2.

Answer 2

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