Nisha did the following work to solve an equation. Nisha's Work Step 1 7 b plus 3 point 2 b minus 5 is equal to 18 point 9 2 Step 2 10 point 2 b minus 5 is equal to 18 point 9 2 Step 3 5 point 2 b is equal to 18 point 9 2 Step 4 b is equal to 3 point 6 4 In which step did Nisha make her first error?

Step 1 correctly states the equation, and Step 2 correctly combines 7b and 3.2b to get 10.2b. To remove −5, Nisha must add 5 to both sides, making the equation 10.2b = 23.92. Step 3 is the first error: it changes the coefficient and does not correctly adjust the right side.

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