7(a-3)=6(a-z)

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Solution for 7(a-3)=6(a-z) equation:


Simplifying
7(a + -3) = 6(a + -1z)

Reorder the terms:
7(-3 + a) = 6(a + -1z)
(-3 * 7 + a * 7) = 6(a + -1z)
(-21 + 7a) = 6(a + -1z)
-21 + 7a = (a * 6 + -1z * 6)
-21 + 7a = (6a + -6z)

Solving
-21 + 7a = 6a + -6z

Solving for variable 'a'.

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

Add '-6a' to each side of the equation.
-21 + 7a + -6a = 6a + -6a + -6z

Combine like terms: 7a + -6a = 1a
-21 + 1a = 6a + -6a + -6z

Combine like terms: 6a + -6a = 0
-21 + 1a = 0 + -6z
-21 + 1a = -6z

Add '21' to each side of the equation.
-21 + 21 + 1a = 21 + -6z

Combine like terms: -21 + 21 = 0
0 + 1a = 21 + -6z
1a = 21 + -6z

Divide each side by '1'.
a = 21 + -6z

Simplifying
a = 21 + -6z

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