61=1x+3(7+x)

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Solution for 61=1x+3(7+x) equation:


Simplifying
61 = 1x + 3(7 + x)
61 = 1x + (7 * 3 + x * 3)
61 = 1x + (21 + 3x)

Reorder the terms:
61 = 21 + 1x + 3x

Combine like terms: 1x + 3x = 4x
61 = 21 + 4x

Solving
61 = 21 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
61 + -4x = 21 + 4x + -4x

Combine like terms: 4x + -4x = 0
61 + -4x = 21 + 0
61 + -4x = 21

Add '-61' to each side of the equation.
61 + -61 + -4x = 21 + -61

Combine like terms: 61 + -61 = 0
0 + -4x = 21 + -61
-4x = 21 + -61

Combine like terms: 21 + -61 = -40
-4x = -40

Divide each side by '-4'.
x = 10

Simplifying
x = 10

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