Question

Complete the following activity to find the value of (x+y) for the simultaneous equation 56x-48y=136 and 48x-56y=72.​

Answer 1

$\: \: \: \: \: \: \: \: \: \: \: \: \: + \: \: \: \: 56x - 48y = 136 \\ \: \: \: \: \: \: \: \: \: \: \: \: + \: \: \: 48x \: - \: 56y = \: \: \: \: 72 \: \: \\ = = = = = = = = = = = = = = \\ ( - ) \: \: \: \: \: \: \: \: \: \: ( + ) \: \: \: \: \: \: \: \: \: \: \: \: \: ( - ) \\ = = = = = = = = = = = = = = \\ 8x \: \: \: + \: \: \: 8y \: \: \: = \: \: \: \: \: 64 \\ (x + y = 8)$

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