MULTIPY
(3x +5y/7)(2x-3y/7)
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=(3x+5y/7) (2x-3y/7)
=3x+5y÷7 × 2x-3y÷7
=3x+5y × 2x-3y
3x - 2x × 3 - 5y
x = -2y
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