0.7a+0.3a=2a-4

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Solution for 0.7a+0.3a=2a-4 equation: 


Simplifying
0.7a + 0.3a = 2a + -4

Combine like terms: 0.7a + 0.3a = 1a
1a = 2a + -4

Reorder the terms:
1a = -4 + 2a

Solving
1a = -4 + 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
1a + -2a = -4 + 2a + -2a

Combine like terms: 1a + -2a = -1a
-1a = -4 + 2a + -2a

Combine like terms: 2a + -2a = 0
-1a = -4 + 0
-1a = -4

Divide each side by '-1'.
a = 4

Simplifying
a = 4

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