A student was asked to rearrange the formula: d 6a = 2d- T1 C (6 - to make d the subject (assuming that 12 + c = 0).

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter6: Fractions
Section6.6: Mixed Expressions
Problem 16OE
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A student was asked to rearrange the formula:
d
3
6a = 2d
=
2
(6
to make d the subject (assuming that 12 + c ‡ 0).
The student's incorrect attempt is shown below.
ba=2d-=16
€16-11-24
3
Clear the fractions By multiplying Byb
36a12d-3d(36-2d)
Multiply out the Bracket
36a=12d-108c-2d
Collect the d terms
36a+108c = 10d
Divide By IO to Give
36a+108c
10
d =
Transcribed Image Text:A student was asked to rearrange the formula: d 3 6a = 2d = 2 (6 to make d the subject (assuming that 12 + c ‡ 0). The student's incorrect attempt is shown below. ba=2d-=16 €16-11-24 3 Clear the fractions By multiplying Byb 36a12d-3d(36-2d) Multiply out the Bracket 36a=12d-108c-2d Collect the d terms 36a+108c = 10d Divide By IO to Give 36a+108c 10 d =
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