7(y-2)-4(2b+5)=9

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Solution for 7(y-2)-4(2b+5)=9 equation:


Simplifying
7(y + -2) + -4(2b + 5) = 9

Reorder the terms:
7(-2 + y) + -4(2b + 5) = 9
(-2 * 7 + y * 7) + -4(2b + 5) = 9
(-14 + 7y) + -4(2b + 5) = 9

Reorder the terms:
-14 + 7y + -4(5 + 2b) = 9
-14 + 7y + (5 * -4 + 2b * -4) = 9
-14 + 7y + (-20 + -8b) = 9

Reorder the terms:
-14 + -20 + -8b + 7y = 9

Combine like terms: -14 + -20 = -34
-34 + -8b + 7y = 9

Solving
-34 + -8b + 7y = 9

Solving for variable 'b'.

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

Add '34' to each side of the equation.
-34 + -8b + 34 + 7y = 9 + 34

Reorder the terms:
-34 + 34 + -8b + 7y = 9 + 34

Combine like terms: -34 + 34 = 0
0 + -8b + 7y = 9 + 34
-8b + 7y = 9 + 34

Combine like terms: 9 + 34 = 43
-8b + 7y = 43

Add '-7y' to each side of the equation.
-8b + 7y + -7y = 43 + -7y

Combine like terms: 7y + -7y = 0
-8b + 0 = 43 + -7y
-8b = 43 + -7y

Divide each side by '-8'.
b = -5.375 + 0.875y

Simplifying
b = -5.375 + 0.875y

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