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Mathematics, 20.10.2020 02:01 vcasela

Erica solved the equation βˆ’5x βˆ’ 25 = 78; her work is shown below. Identify the error and where it was made. βˆ’5x βˆ’ 25 = 78
Step 1: βˆ’5x βˆ’ 25 βˆ’ 25 = 78 βˆ’ 25
Step 2: βˆ’5x = 53
Step 3: negative five times x over negative five = fifty-three over negative five
Step 4: x = negative fifty-three over five

Step 1: She should have added 25 to each side.
Step 1: She should have divided both sides by βˆ’5.
Step 3: She should have divided both sides by βˆ’5.
Step 3: She should have multiplied both sides by βˆ’5.

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Erica solved the equation βˆ’5x βˆ’ 25 = 78; her work is shown below. Identify the error and where it wa...
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