3x+1+4x+5=31

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Solution for 3x+1+4x+5=31 equation:


Simplifying
3x + 1 + 4x + 5 = 31

Reorder the terms:
1 + 5 + 3x + 4x = 31

Combine like terms: 1 + 5 = 6
6 + 3x + 4x = 31

Combine like terms: 3x + 4x = 7x
6 + 7x = 31

Solving
6 + 7x = 31

Solving for variable 'x'.

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

Add '-6' to each side of the equation.
6 + -6 + 7x = 31 + -6

Combine like terms: 6 + -6 = 0
0 + 7x = 31 + -6
7x = 31 + -6

Combine like terms: 31 + -6 = 25
7x = 25

Divide each side by '7'.
x = 3.571428571

Simplifying
x = 3.571428571

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