91=49+6d

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Solution for 91=49+6d equation:


Simplifying
91 = 49 + 6d

Solving
91 = 49 + 6d

Solving for variable 'd'.

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

Add '-6d' to each side of the equation.
91 + -6d = 49 + 6d + -6d

Combine like terms: 6d + -6d = 0
91 + -6d = 49 + 0
91 + -6d = 49

Add '-91' to each side of the equation.
91 + -91 + -6d = 49 + -91

Combine like terms: 91 + -91 = 0
0 + -6d = 49 + -91
-6d = 49 + -91

Combine like terms: 49 + -91 = -42
-6d = -42

Divide each side by '-6'.
d = 7

Simplifying
d = 7

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