D=4(2a+b)+7a-3b

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Solution for D=4(2a+b)+7a-3b equation: 


Simplifying
D = 4(2a + b) + 7a + -3b
D = (2a * 4 + b * 4) + 7a + -3b
D = (8a + 4b) + 7a + -3b

Reorder the terms:
D = 8a + 7a + 4b + -3b

Combine like terms: 8a + 7a = 15a
D = 15a + 4b + -3b

Combine like terms: 4b + -3b = 1b
D = 15a + 1b

Solving
D = 15a + 1b

Solving for variable 'D'.

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

Simplifying
D = 15a + 1b

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