Solve 0.1=1*12/1+R

$$0.1 = \frac{ 1 \cdot 12 }{ 1+R }$$

Solve for R

$$R=119$$

Steps for Solving Linear Equation

Variable R cannot be equal to -1 since division by zero is not defined. Multiply both sides of the equation by R+1.

$$0.1\left(R+1\right)=1\times 12$$

Use the distributive property to multiply 0.1 by R+1.

$$0.1R+0.1=1\times 12$$

Multiply 1 and 12 to get 12.

$$0.1R+0.1=12$$

Subtract 0.1 from both sides.

$$0.1R=12-0.1$$

Subtract 0.1 from 12 to get 11.9.

$$0.1R=11.9$$

Divide both sides by 0.1.

$$R=\frac{11.9}{0.1}$$

Expand \frac{11.9}{0.1} by multiplying both numerator and the denominator by 10. Anything divided by one gives itself.

$$R=119$$