7d-2(3+4d)=19

Solution for 7d-2(3+4d)=19 equation:

Simplifying
7d + -2(3 + 4d) = 19
7d + (3 * -2 + 4d * -2) = 19
7d + (-6 + -8d) = 19

Reorder the terms:
-6 + 7d + -8d = 19

Combine like terms: 7d + -8d = -1d
-6 + -1d = 19

Solving
-6 + -1d = 19

Solving for variable 'd'.

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

Add '6' to each side of the equation.
-6 + 6 + -1d = 19 + 6

Combine like terms: -6 + 6 = 0
0 + -1d = 19 + 6
-1d = 19 + 6

Combine like terms: 19 + 6 = 25
-1d = 25

Divide each side by '-1'.
d = -25

Simplifying
d = -25