140-100a=21a+147

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Solution for 140-100a=21a+147 equation: 


Simplifying
140 + -100a = 21a + 147

Reorder the terms:
140 + -100a = 147 + 21a

Solving
140 + -100a = 147 + 21a

Solving for variable 'a'.

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

Add '-21a' to each side of the equation.
140 + -100a + -21a = 147 + 21a + -21a

Combine like terms: -100a + -21a = -121a
140 + -121a = 147 + 21a + -21a

Combine like terms: 21a + -21a = 0
140 + -121a = 147 + 0
140 + -121a = 147

Add '-140' to each side of the equation.
140 + -140 + -121a = 147 + -140

Combine like terms: 140 + -140 = 0
0 + -121a = 147 + -140
-121a = 147 + -140

Combine like terms: 147 + -140 = 7
-121a = 7

Divide each side by '-121'.
a = -0.05785123967

Simplifying
a = -0.05785123967

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