-3(1+6)=14r

Solution for -3(1+6)=14r equation:

Simplifying
-3(1 + 6) = 14r

Combine like terms: 1 + 6 = 7
-3(7) = 14r

Multiply -3 * 7
-21 = 14r

Solving
-21 = 14r

Solving for variable 'r'.

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

Add '-14r' to each side of the equation.
-21 + -14r = 14r + -14r

Combine like terms: 14r + -14r = 0
-21 + -14r = 0

Add '21' to each side of the equation.
-21 + 21 + -14r = 0 + 21

Combine like terms: -21 + 21 = 0
0 + -14r = 0 + 21
-14r = 0 + 21

Combine like terms: 0 + 21 = 21
-14r = 21

Divide each side by '-14'.
r = -1.5

Simplifying
r = -1.5