-3a+6(7a-1)=189

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Solution for -3a+6(7a-1)=189 equation:


Simplifying
-3a + 6(7a + -1) = 189

Reorder the terms:
-3a + 6(-1 + 7a) = 189
-3a + (-1 * 6 + 7a * 6) = 189
-3a + (-6 + 42a) = 189

Reorder the terms:
-6 + -3a + 42a = 189

Combine like terms: -3a + 42a = 39a
-6 + 39a = 189

Solving
-6 + 39a = 189

Solving for variable 'a'.

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

Add '6' to each side of the equation.
-6 + 6 + 39a = 189 + 6

Combine like terms: -6 + 6 = 0
0 + 39a = 189 + 6
39a = 189 + 6

Combine like terms: 189 + 6 = 195
39a = 195

Divide each side by '39'.
a = 5

Simplifying
a = 5

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