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  • 16-01-2021
  • Mathematics
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Problem: 2 - $(7 – 2y) = -3
Step 1: -3(7 2y) = -3
Step 2: -21 + 6y=-3
Step 3: by = 18
Step 4: y = 3
Determine which number step the mistake is Made and describe the error

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PoppyPopcorn
PoppyPopcorn PoppyPopcorn
  • 16-01-2021
Step 3. Instead of subtracting -21 and -3, they should’ve added because they are like terms. A negative plus a negative is still a negative.
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