77=7(5+a)

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Solution for 77=7(5+a) equation:


Simplifying
77 = 7(5 + a)
77 = (5 * 7 + a * 7)
77 = (35 + 7a)

Solving
77 = 35 + 7a

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-7a' to each side of the equation.
77 + -7a = 35 + 7a + -7a

Combine like terms: 7a + -7a = 0
77 + -7a = 35 + 0
77 + -7a = 35

Add '-77' to each side of the equation.
77 + -77 + -7a = 35 + -77

Combine like terms: 77 + -77 = 0
0 + -7a = 35 + -77
-7a = 35 + -77

Combine like terms: 35 + -77 = -42
-7a = -42

Divide each side by '-7'.
a = 6

Simplifying
a = 6

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