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Mathematics
21 October, 00:09
What is - 7x+2y=-23 y=-8x+23
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Shea Best
21 October, 00:25
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Steps:I will try to solve your system of equations.
y = - 8x + 23; - 7x + 2y = - 23
Step: Solve y = - 8x + 23 for y: Step:
Substitute - 8x + 23 for y in - 7x + 2y = - 23:
- 7x + 2y = - 23 - 7x + 2 ( - 8x + 23) = - 23 - 23x + 46 = - 23 (Simplify both sides of the equation) - 23x + 46 + - 46 = - 23 + - 46 (Add - 46 to both sides) - 23x = - 69 - 23x - 23 = - 69 - 23 (Divide both sides by - 23) x=3 Step: Substitute 3 for x in y = - 8x + 23 : y = - 8x + 23 y = (-8) (3) + 23 y = - 1 (Simplify both sides of the equation)
Answer: y = - 1 and x = 3
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