Question

solve more on linear equations? full solution

Answer 1

Heya Friend, Here is your Answer :

$(x + 7)(x + 9) = (x + 3)(x + 21) \\ \\ {x}^{2} + 9x + 7x + 63 = {x}^{2} + 21x + 3x + 63 \\ \\ 9x + 7x = 21x + 3x \\ \\ 16x = 24x \\ \\ 16x - 24x = 0 \\ \\ - 8x = 0 \\ \\ x = \frac{0}{ - 8} \\ \\ x = 0$

Hope it would help you

Answer 2

Hey mate, here is your answer -:)

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$\: \: \: \: \: \: \: \: (x + 7)(x + 9) = ( x + 3)(x + 21) \\ {x}^{2} + 9x + 7x + 63 = {x}^{2} + 21x + 3x + 63 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: 9x + 7x = 21x + 3x \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: 16x = 24x \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: 16x - 24x = 0 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: - 8x = 0 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: x = 0$

The value of x is 8

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HOPE it helps to you!!!