-7(a-4b-9c)=

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Solution for -7(a-4b-9c)= equation:


Simplifying
-7(a + -4b + -9c) = 0
(a * -7 + -4b * -7 + -9c * -7) = 0
(-7a + 28b + 63c) = 0

Solving
-7a + 28b + 63c = 0

Solving for variable 'a'.

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

Add '-28b' to each side of the equation.
-7a + 28b + -28b + 63c = 0 + -28b

Combine like terms: 28b + -28b = 0
-7a + 0 + 63c = 0 + -28b
-7a + 63c = 0 + -28b
Remove the zero:
-7a + 63c = -28b

Add '-63c' to each side of the equation.
-7a + 63c + -63c = -28b + -63c

Combine like terms: 63c + -63c = 0
-7a + 0 = -28b + -63c
-7a = -28b + -63c

Divide each side by '-7'.
a = 4b + 9c

Simplifying
a = 4b + 9c

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