40=a*2*b*4

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Solution for 40=a*2*b*4 equation:


Simplifying
40 = a * 2b * 4

Reorder the terms for easier multiplication:
40 = 2 * 4a * b

Multiply 2 * 4
40 = 8a * b

Multiply a * b
40 = 8ab

Solving
40 = 8ab

Solving for variable 'a'.

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

Add '-8ab' to each side of the equation.
40 + -8ab = 8ab + -8ab

Combine like terms: 8ab + -8ab = 0
40 + -8ab = 0

Add '-40' to each side of the equation.
40 + -40 + -8ab = 0 + -40

Combine like terms: 40 + -40 = 0
0 + -8ab = 0 + -40
-8ab = 0 + -40

Combine like terms: 0 + -40 = -40
-8ab = -40

Divide each side by '-8b'.
a = 5b-1

Simplifying
a = 5b-1

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