9f-21=3(t-7)+6f

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Solution for 9f-21=3(t-7)+6f equation:


Simplifying
9f + -21 = 3(t + -7) + 6f

Reorder the terms:
-21 + 9f = 3(t + -7) + 6f

Reorder the terms:
-21 + 9f = 3(-7 + t) + 6f
-21 + 9f = (-7 * 3 + t * 3) + 6f
-21 + 9f = (-21 + 3t) + 6f

Reorder the terms:
-21 + 9f = -21 + 6f + 3t

Add '21' to each side of the equation.
-21 + 21 + 9f = -21 + 6f + 21 + 3t

Combine like terms: -21 + 21 = 0
0 + 9f = -21 + 6f + 21 + 3t
9f = -21 + 6f + 21 + 3t

Reorder the terms:
9f = -21 + 21 + 6f + 3t

Combine like terms: -21 + 21 = 0
9f = 0 + 6f + 3t
9f = 6f + 3t

Solving
9f = 6f + 3t

Solving for variable 'f'.

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

Add '-6f' to each side of the equation.
9f + -6f = 6f + -6f + 3t

Combine like terms: 9f + -6f = 3f
3f = 6f + -6f + 3t

Combine like terms: 6f + -6f = 0
3f = 0 + 3t
3f = 3t

Divide each side by '3'.
f = t

Simplifying
f = t

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