-3(3+4b)7=82

Solution for -3(3+4b)7=82 equation:

Simplifying
-3(3 + 4b) * 7 = 82

Reorder the terms for easier multiplication:
-3 * 7(3 + 4b) = 82

Multiply -3 * 7
-21(3 + 4b) = 82
(3 * -21 + 4b * -21) = 82
(-63 + -84b) = 82

Solving
-63 + -84b = 82

Solving for variable 'b'.

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

Add '63' to each side of the equation.
-63 + 63 + -84b = 82 + 63

Combine like terms: -63 + 63 = 0
0 + -84b = 82 + 63
-84b = 82 + 63

Combine like terms: 82 + 63 = 145
-84b = 145

Divide each side by '-84'.
b = -1.726190476

Simplifying
b = -1.726190476