7a+4-3a=4.2a+7

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Solution for 7a+4-3a=4.2a+7 equation:


Simplifying
7a + 4 + -3a = 4.2a + 7

Reorder the terms:
4 + 7a + -3a = 4.2a + 7

Combine like terms: 7a + -3a = 4a
4 + 4a = 4.2a + 7

Reorder the terms:
4 + 4a = 7 + 4.2a

Solving
4 + 4a = 7 + 4.2a

Solving for variable 'a'.

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

Add '-4.2a' to each side of the equation.
4 + 4a + -4.2a = 7 + 4.2a + -4.2a

Combine like terms: 4a + -4.2a = -0.2a
4 + -0.2a = 7 + 4.2a + -4.2a

Combine like terms: 4.2a + -4.2a = 0.0
4 + -0.2a = 7 + 0.0
4 + -0.2a = 7

Add '-4' to each side of the equation.
4 + -4 + -0.2a = 7 + -4

Combine like terms: 4 + -4 = 0
0 + -0.2a = 7 + -4
-0.2a = 7 + -4

Combine like terms: 7 + -4 = 3
-0.2a = 3

Divide each side by '-0.2'.
a = -15

Simplifying
a = -15

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