7y-5=-21/7

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Solution for 7y-5=-21/7 equation: 


y in (-oo:+oo)

7*y-5 = -21/7 // + -21/7

7*y-(-21/7)-5 = 0

7*y-5+3 = 0

7*y-2 = 0 // + 2

7*y = 2 // : 7

y = 2/7

y = 2/7

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