25=1+2(4+a)

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Solution for 25=1+2(4+a) equation:


Simplifying
25 = 1 + 2(4 + a)
25 = 1 + (4 * 2 + a * 2)
25 = 1 + (8 + 2a)

Combine like terms: 1 + 8 = 9
25 = 9 + 2a

Solving
25 = 9 + 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
25 + -2a = 9 + 2a + -2a

Combine like terms: 2a + -2a = 0
25 + -2a = 9 + 0
25 + -2a = 9

Add '-25' to each side of the equation.
25 + -25 + -2a = 9 + -25

Combine like terms: 25 + -25 = 0
0 + -2a = 9 + -25
-2a = 9 + -25

Combine like terms: 9 + -25 = -16
-2a = -16

Divide each side by '-2'.
a = 8

Simplifying
a = 8

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