R = (r₁r₂) / (r₁ + r₂)
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Further explanation</h3>

In the equation there are three variables, namely R, r₁, and r₂.
Our main plan is to isolate the variable R alone at the end of the process on one side of the equation until the variable will be equal to the value on the opposite side.
Let us solve R from the equation.
Both sides are divided by 
Thus, the result is 
That's all the steps to get R as a subject.
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What if we solve for r₂?
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Or, we prepare as follows:
We use the distributive property of multiplication on the right side.

Both sides are subtracted by 

Again we use the distributive property of multiplication on the left side.
Pull r₂ out of the brackets.

Both sides are divided by 
Thus, the result is 
That's all the steps to get r₂ as a subject.
<h3>Learn more</h3>
- Solve step by step for ²/₇m - ¹/₇ = ³/₁₄ brainly.com/question/4853649
- The inverse of a function brainly.com/question/3225044
- Solving for a subject from the equation brainly.com/question/6465937
Keywords: solve for R, r₁, r₂, both sides, divide, multiply, subject, steps, he distributive property of multiplication