7d+d-4a-7=5d

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Solution for 7d+d-4a-7=5d equation:


Simplifying
7d + d + -4a + -7 = 5d

Reorder the terms:
-7 + -4a + 7d + d = 5d

Combine like terms: 7d + d = 8d
-7 + -4a + 8d = 5d

Solving
-7 + -4a + 8d = 5d

Solving for variable 'a'.

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

Add '7' to each side of the equation.
-7 + -4a + 7 + 8d = 7 + 5d

Reorder the terms:
-7 + 7 + -4a + 8d = 7 + 5d

Combine like terms: -7 + 7 = 0
0 + -4a + 8d = 7 + 5d
-4a + 8d = 7 + 5d

Add '-8d' to each side of the equation.
-4a + 8d + -8d = 7 + 5d + -8d

Combine like terms: 8d + -8d = 0
-4a + 0 = 7 + 5d + -8d
-4a = 7 + 5d + -8d

Combine like terms: 5d + -8d = -3d
-4a = 7 + -3d

Divide each side by '-4'.
a = -1.75 + 0.75d

Simplifying
a = -1.75 + 0.75d

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