3-2.5(4+2d)=28

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Solution for 3-2.5(4+2d)=28 equation:


Simplifying
3 + -2.5(4 + 2d) = 28
3 + (4 * -2.5 + 2d * -2.5) = 28
3 + (-10 + -5d) = 28

Combine like terms: 3 + -10 = -7
-7 + -5d = 28

Solving
-7 + -5d = 28

Solving for variable 'd'.

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

Add '7' to each side of the equation.
-7 + 7 + -5d = 28 + 7

Combine like terms: -7 + 7 = 0
0 + -5d = 28 + 7
-5d = 28 + 7

Combine like terms: 28 + 7 = 35
-5d = 35

Divide each side by '-5'.
d = -7

Simplifying
d = -7

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