(3-a)x=7

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Solution for (3-a)x=7 equation:


Simplifying
(3 + -1a) * x = 7

Reorder the terms for easier multiplication:
x(3 + -1a) = 7
(3 * x + -1a * x) = 7

Reorder the terms:
(-1ax + 3x) = 7
(-1ax + 3x) = 7

Solving
-1ax + 3x = 7

Solving for variable 'a'.

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

Add '-3x' to each side of the equation.
-1ax + 3x + -3x = 7 + -3x

Combine like terms: 3x + -3x = 0
-1ax + 0 = 7 + -3x
-1ax = 7 + -3x

Divide each side by '-1x'.
a = -7x-1 + 3

Simplifying
a = -7x-1 + 3

Reorder the terms:
a = 3 + -7x-1

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