25=7+8+c

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Solution for 25=7+8+c equation:


Simplifying
25 = 7 + 8 + c

Combine like terms: 7 + 8 = 15
25 = 15 + c

Solving
25 = 15 + c

Solving for variable 'c'.

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

Add '-1c' to each side of the equation.
25 + -1c = 15 + c + -1c

Combine like terms: c + -1c = 0
25 + -1c = 15 + 0
25 + -1c = 15

Add '-25' to each side of the equation.
25 + -25 + -1c = 15 + -25

Combine like terms: 25 + -25 = 0
0 + -1c = 15 + -25
-1c = 15 + -25

Combine like terms: 15 + -25 = -10
-1c = -10

Divide each side by '-1'.
c = 10

Simplifying
c = 10

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