98=7x+7(x-4)

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Solution for 98=7x+7(x-4) equation:


Simplifying
98 = 7x + 7(x + -4)

Reorder the terms:
98 = 7x + 7(-4 + x)
98 = 7x + (-4 * 7 + x * 7)
98 = 7x + (-28 + 7x)

Reorder the terms:
98 = -28 + 7x + 7x

Combine like terms: 7x + 7x = 14x
98 = -28 + 14x

Solving
98 = -28 + 14x

Solving for variable 'x'.

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

Add '-14x' to each side of the equation.
98 + -14x = -28 + 14x + -14x

Combine like terms: 14x + -14x = 0
98 + -14x = -28 + 0
98 + -14x = -28

Add '-98' to each side of the equation.
98 + -98 + -14x = -28 + -98

Combine like terms: 98 + -98 = 0
0 + -14x = -28 + -98
-14x = -28 + -98

Combine like terms: -28 + -98 = -126
-14x = -126

Divide each side by '-14'.
x = 9

Simplifying
x = 9

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