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Solve for x :2x -3x=7-3 8 12 |
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Answer» Answer: 2x = 8 – 12y 12 + 2x + 2y = 4x
The second equation, after subtracting 2x from each side, becomes 12 + 2y = 2x
EQUATING the TWO REPRESENTATIONS of 2x from FIRST & second EQUATIONS leadsus to 12 + 2y = 8 - 12y or 14 y = -4 so that gives y = -2/7.
Check my work! If you agree, proceed to substitute the y value into the first equation, leading to solving for x. |
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