3(x-1)+7x-15=4

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Solution for 3(x-1)+7x-15=4 equation:


Simplifying
3(x + -1) + 7x + -15 = 4

Reorder the terms:
3(-1 + x) + 7x + -15 = 4
(-1 * 3 + x * 3) + 7x + -15 = 4
(-3 + 3x) + 7x + -15 = 4

Reorder the terms:
-3 + -15 + 3x + 7x = 4

Combine like terms: -3 + -15 = -18
-18 + 3x + 7x = 4

Combine like terms: 3x + 7x = 10x
-18 + 10x = 4

Solving
-18 + 10x = 4

Solving for variable 'x'.

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

Add '18' to each side of the equation.
-18 + 18 + 10x = 4 + 18

Combine like terms: -18 + 18 = 0
0 + 10x = 4 + 18
10x = 4 + 18

Combine like terms: 4 + 18 = 22
10x = 22

Divide each side by '10'.
x = 2.2

Simplifying
x = 2.2

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