4a-7=2a+42

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Solution for 4a-7=2a+42 equation:


Simplifying
4a + -7 = 2a + 42

Reorder the terms:
-7 + 4a = 2a + 42

Reorder the terms:
-7 + 4a = 42 + 2a

Solving
-7 + 4a = 42 + 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.
-7 + 4a + -2a = 42 + 2a + -2a

Combine like terms: 4a + -2a = 2a
-7 + 2a = 42 + 2a + -2a

Combine like terms: 2a + -2a = 0
-7 + 2a = 42 + 0
-7 + 2a = 42

Add '7' to each side of the equation.
-7 + 7 + 2a = 42 + 7

Combine like terms: -7 + 7 = 0
0 + 2a = 42 + 7
2a = 42 + 7

Combine like terms: 42 + 7 = 49
2a = 49

Divide each side by '2'.
a = 24.5

Simplifying
a = 24.5

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