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Solve by cross multiplication method X + Y is equal to 7 and x minus Y is equal to 3 |
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Answer» X + y = 7 x = 7 - y .....( 1 ) x - y = 3 x = 3 + y ..... ( 2 ) Combining the EQUATIONS, we get 7 - y = 3 + y 7 - 3 = 2y 4 / 2 = y 2. = y |
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