7-4(d-3)+1=31

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Solution for 7-4(d-3)+1=31 equation:


Simplifying
7 + -4(d + -3) + 1 = 31

Reorder the terms:
7 + -4(-3 + d) + 1 = 31
7 + (-3 * -4 + d * -4) + 1 = 31
7 + (12 + -4d) + 1 = 31

Reorder the terms:
7 + 12 + 1 + -4d = 31

Combine like terms: 7 + 12 = 19
19 + 1 + -4d = 31

Combine like terms: 19 + 1 = 20
20 + -4d = 31

Solving
20 + -4d = 31

Solving for variable 'd'.

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

Add '-20' to each side of the equation.
20 + -20 + -4d = 31 + -20

Combine like terms: 20 + -20 = 0
0 + -4d = 31 + -20
-4d = 31 + -20

Combine like terms: 31 + -20 = 11
-4d = 11

Divide each side by '-4'.
d = -2.75

Simplifying
d = -2.75

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