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What is the first step in solving the equation b=r + 27 for r? A Add 21 to both sides. B Subtract 271 from both sides. C Multiply both sides by 2n. D Divide both sides by 27.​

What is the first step in solving the equation br 27 for r A Add 21 to both sides B Subtract 271 from both sides C Multiply both sides by 2n D Divide both side class=