(-21.04)(-4.2)=d

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Solution for (-21.04)(-4.2)=d equation: 


Simplifying
(-21.04)(-4.2) = d

Multiply -21.04 * -4.2
88.368 = d

Solving
88.368 = d

Solving for variable 'd'.

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

Add '-1d' to each side of the equation.
88.368 + -1d = d + -1d

Combine like terms: d + -1d = 0
88.368 + -1d = 0

Add '-88.368' to each side of the equation.
88.368 + -88.368 + -1d = 0 + -88.368

Combine like terms: 88.368 + -88.368 = 0.000
0.000 + -1d = 0 + -88.368
-1d = 0 + -88.368

Combine like terms: 0 + -88.368 = -88.368
-1d = -88.368

Divide each side by '-1'.
d = 88.368

Simplifying
d = 88.368

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