7(x+3)=9(x+4)-1

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Solution for 7(x+3)=9(x+4)-1 equation:


Simplifying
7(x + 3) = 9(x + 4) + -1

Reorder the terms:
7(3 + x) = 9(x + 4) + -1
(3 * 7 + x * 7) = 9(x + 4) + -1
(21 + 7x) = 9(x + 4) + -1

Reorder the terms:
21 + 7x = 9(4 + x) + -1
21 + 7x = (4 * 9 + x * 9) + -1
21 + 7x = (36 + 9x) + -1

Reorder the terms:
21 + 7x = 36 + -1 + 9x

Combine like terms: 36 + -1 = 35
21 + 7x = 35 + 9x

Solving
21 + 7x = 35 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
21 + 7x + -9x = 35 + 9x + -9x

Combine like terms: 7x + -9x = -2x
21 + -2x = 35 + 9x + -9x

Combine like terms: 9x + -9x = 0
21 + -2x = 35 + 0
21 + -2x = 35

Add '-21' to each side of the equation.
21 + -21 + -2x = 35 + -21

Combine like terms: 21 + -21 = 0
0 + -2x = 35 + -21
-2x = 35 + -21

Combine like terms: 35 + -21 = 14
-2x = 14

Divide each side by '-2'.
x = -7

Simplifying
x = -7

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