3a-8(2a+5b)-(a-7b)=0

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Solution for 3a-8(2a+5b)-(a-7b)=0 equation:


Simplifying
3a + -8(2a + 5b) + -1(a + -7b) = 0
3a + (2a * -8 + 5b * -8) + -1(a + -7b) = 0
3a + (-16a + -40b) + -1(a + -7b) = 0
3a + -16a + -40b + (a * -1 + -7b * -1) = 0
3a + -16a + -40b + (-1a + 7b) = 0

Reorder the terms:
3a + -16a + -1a + -40b + 7b = 0

Combine like terms: 3a + -16a = -13a
-13a + -1a + -40b + 7b = 0

Combine like terms: -13a + -1a = -14a
-14a + -40b + 7b = 0

Combine like terms: -40b + 7b = -33b
-14a + -33b = 0

Solving
-14a + -33b = 0

Solving for variable 'a'.

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

Add '33b' to each side of the equation.
-14a + -33b + 33b = 0 + 33b

Combine like terms: -33b + 33b = 0
-14a + 0 = 0 + 33b
-14a = 0 + 33b
Remove the zero:
-14a = 33b

Divide each side by '-14'.
a = -2.357142857b

Simplifying
a = -2.357142857b

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