3(7+x)=5(7-(-4))

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Solution for 3(7+x)=5(7-(-4)) equation: 


Simplifying
3(7 + x) = 5(7 + -1(-4))
(7 * 3 + x * 3) = 5(7 + -1(-4))
(21 + 3x) = 5(7 + -1(-4))

Multiply -1 * -4
21 + 3x = 5(7 + 4)

Combine like terms: 7 + 4 = 11
21 + 3x = 5(11)

Multiply 5 * 11
21 + 3x = 55

Solving
21 + 3x = 55

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + 3x = 55 + -21

Combine like terms: 21 + -21 = 0
0 + 3x = 55 + -21
3x = 55 + -21

Combine like terms: 55 + -21 = 34
3x = 34

Divide each side by '3'.
x = 11.33333333

Simplifying
x = 11.33333333

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