4(1+3)-(3+c)=15

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Solution for 4(1+3)-(3+c)=15 equation: 


Simplifying
4(1 + 3) + -1(3 + c) = 15

Combine like terms: 1 + 3 = 4
4(4) + -1(3 + c) = 15

Multiply 4 * 4
16 + -1(3 + c) = 15
16 + (3 * -1 + c * -1) = 15
16 + (-3 + -1c) = 15

Combine like terms: 16 + -3 = 13
13 + -1c = 15

Solving
13 + -1c = 15

Solving for variable 'c'.

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

Add '-13' to each side of the equation.
13 + -13 + -1c = 15 + -13

Combine like terms: 13 + -13 = 0
0 + -1c = 15 + -13
-1c = 15 + -13

Combine like terms: 15 + -13 = 2
-1c = 2

Divide each side by '-1'.
c = -2

Simplifying
c = -2

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