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Sunny_sXe [5.5K]
3 years ago
13

Error Analysis: A student solves the equation S=2Lw+2Lh+2Wh for W and his answer are W=S-2Lh-2Lh\h Describing and correct the st

udent's issues....
Mathematics
1 answer:
serious [3.7K]3 years ago
3 0
S=2LW+2LH+2WH

First, subtract 2LH from both sides
S-2LH=2LW+2LH-2LH+2WH
S-2LH=2LW+2WH

Separate out the W
S-2LH=W(2L+2H)

Divide by 2L+2H to get W alone

\frac{S-2LH}{2L+2H} =W

Hope this helps.


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