The work of a student to solve a set of equations is shown:
Equation 1: m = 8 + 2n
Equation 2: 3m = 4 + 4n
Step 1: −3(m) = −3(8 + 2n) [Equation 1 is multiplied by −3.]
3m = 4 + 4n [Equation 2]
Step 2: −3m = −24 − 6n [Equation 1 in Step 1 is simplified.]
3m = 4 + 4n [Equation 2]
Step 3: −3m + 3m = −24 − 6n + 4n [Equations in Step 2 are added.]
Step 4: 0 = −24 − 2n
Step 5: n = −12
In which step did the student first make an error?
A.Step 4
B.Step 3
C.Step 2
D.Step 1
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OpenStudy (anonymous):
@israa88
OpenStudy (anonymous):
@prettygirl876
OpenStudy (anonymous):
@kheath39
OpenStudy (anonymous):
hello
OpenStudy (anonymous):
HI
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OpenStudy (anonymous):
hey give me a min to read this
OpenStudy (anonymous):
Okay
OpenStudy (anonymous):
ok so the easiest way to find out is to solve it yourself and see where u 2 made a difference
OpenStudy (anonymous):
in step 1
OpenStudy (anonymous):
what did u get
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