7x+45=4(x+9)

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Solution for 7x+45=4(x+9) equation:


Simplifying
7x + 45 = 4(x + 9)

Reorder the terms:
45 + 7x = 4(x + 9)

Reorder the terms:
45 + 7x = 4(9 + x)
45 + 7x = (9 * 4 + x * 4)
45 + 7x = (36 + 4x)

Solving
45 + 7x = 36 + 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.
45 + 7x + -4x = 36 + 4x + -4x

Combine like terms: 7x + -4x = 3x
45 + 3x = 36 + 4x + -4x

Combine like terms: 4x + -4x = 0
45 + 3x = 36 + 0
45 + 3x = 36

Add '-45' to each side of the equation.
45 + -45 + 3x = 36 + -45

Combine like terms: 45 + -45 = 0
0 + 3x = 36 + -45
3x = 36 + -45

Combine like terms: 36 + -45 = -9
3x = -9

Divide each side by '3'.
x = -3

Simplifying
x = -3

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