Solve -4=2*r+1*(-6)/2+1

$$- 4 = \frac { 2 \times r + 1 \times ( - 6 ) } { 2 + 1 }$$

Solve for r

$$r=-3$$

Steps for Solving Linear Equation

Multiply 1 and -6 to get -6.

$$-4=\frac{2r-6}{2+1}$$

Add 2 and 1 to get 3.

$$-4=\frac{2r-6}{3}$$

Divide each term of 2r-6 by 3 to get \frac{2}{3}r-2.

$$-4=\frac{2}{3}r-2$$

Swap sides so that all variable terms are on the left hand side.

$$\frac{2}{3}r-2=-4$$

Add 2 to both sides.

$$\frac{2}{3}r=-4+2$$

Add -4 and 2 to get -2.

$$\frac{2}{3}r=-2$$

Multiply both sides by \frac{3}{2}, the reciprocal of \frac{2}{3}.

$$r=-2\times \frac{3}{2}$$

Multiply -2 times \frac{3}{2}.

$$r=-3$$