4a+25.7=13(a-1)

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Solution for 4a+25.7=13(a-1) equation:


Simplifying
4a + 25.7 = 13(a + -1)

Reorder the terms:
25.7 + 4a = 13(a + -1)

Reorder the terms:
25.7 + 4a = 13(-1 + a)
25.7 + 4a = (-1 * 13 + a * 13)
25.7 + 4a = (-13 + 13a)

Solving
25.7 + 4a = -13 + 13a

Solving for variable 'a'.

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

Add '-13a' to each side of the equation.
25.7 + 4a + -13a = -13 + 13a + -13a

Combine like terms: 4a + -13a = -9a
25.7 + -9a = -13 + 13a + -13a

Combine like terms: 13a + -13a = 0
25.7 + -9a = -13 + 0
25.7 + -9a = -13

Add '-25.7' to each side of the equation.
25.7 + -25.7 + -9a = -13 + -25.7

Combine like terms: 25.7 + -25.7 = 0.0
0.0 + -9a = -13 + -25.7
-9a = -13 + -25.7

Combine like terms: -13 + -25.7 = -38.7
-9a = -38.7

Divide each side by '-9'.
a = 4.3

Simplifying
a = 4.3

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