5+7a=4a-7 - solution

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Solution for 5+7a=4a-7 equation:

a in (-oo:+oo)

7*a+5 = 4*a-7 // - 4*a-7

7*a-(4*a)+5+7 = 0

7*a-4*a+5+7 = 0

3*a+12 = 0 // - 12

3*a = -12 // : 3

a = -12/3

a = -4

a = -4

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