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Chapter 2: Q20. (page 86)

Solve each equation. Check your solution.

鈭�61=d+(鈭�18)

Short Answer

Expert verified

The required solution isd=鈭�43.

Step by step solution

01

Step 1. Write the given information.

The given equation is:

鈭�61=d+鈭�18

02

Step 2. Calculation.

鈭�61=d+鈭�18鈭�61=d鈭�18鈥夆赌夆赌夆赌夆赌夆赌夆赌夆赌�[(+)(鈭�)=(鈭�)]鈭�61+18=d鈭�18+18鈥夆赌夆赌夆赌�[础诲诲颈苍驳鈥�18鈥塷苍产辞迟丑蝉颈诲别蝉]鈭�43=d鈥塷谤d=鈭�43

03

Step 3. Checking solution.

Substitute d=鈭�43in the given equation to check:

鈭�61=d+鈭�18鈭�61=鈭�43鈭�18鈭�61=鈭�61

Hence, proved.

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