3(0.875+-0.625b)+5(0.875+-0.625b+b)=7

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Solution for 3(0.875+-0.625b)+5(0.875+-0.625b+b)=7 equation: 


Simplifying
3(0.875 + -0.625b) + 5(0.875 + -0.625b + b) = 7
(0.875 * 3 + -0.625b * 3) + 5(0.875 + -0.625b + b) = 7
(2.625 + -1.875b) + 5(0.875 + -0.625b + b) = 7

Combine like terms: -0.625b + b = 0.375b
2.625 + -1.875b + 5(0.875 + 0.375b) = 7
2.625 + -1.875b + (0.875 * 5 + 0.375b * 5) = 7
2.625 + -1.875b + (4.375 + 1.875b) = 7

Reorder the terms:
2.625 + 4.375 + -1.875b + 1.875b = 7

Combine like terms: 2.625 + 4.375 = 7
7 + -1.875b + 1.875b = 7

Combine like terms: -1.875b + 1.875b = 0.000
7 + 0.000 = 7
7 = 7

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

Combine like terms: 7 + -7 = 0
0 = 7 + -7

Combine like terms: 7 + -7 = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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