198=7x+2(4x+9)

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Solution for 198=7x+2(4x+9) equation:


Simplifying
198 = 7x + 2(4x + 9)

Reorder the terms:
198 = 7x + 2(9 + 4x)
198 = 7x + (9 * 2 + 4x * 2)
198 = 7x + (18 + 8x)

Reorder the terms:
198 = 18 + 7x + 8x

Combine like terms: 7x + 8x = 15x
198 = 18 + 15x

Solving
198 = 18 + 15x

Solving for variable 'x'.

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

Add '-15x' to each side of the equation.
198 + -15x = 18 + 15x + -15x

Combine like terms: 15x + -15x = 0
198 + -15x = 18 + 0
198 + -15x = 18

Add '-198' to each side of the equation.
198 + -198 + -15x = 18 + -198

Combine like terms: 198 + -198 = 0
0 + -15x = 18 + -198
-15x = 18 + -198

Combine like terms: 18 + -198 = -180
-15x = -180

Divide each side by '-15'.
x = 12

Simplifying
x = 12

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