Mathematics, 28.07.2019 09:00 mathbrain58
The work of a student to solve a set of equations is shown: equation 1: m = 8 + 2n equation 2: 6m = 4 + 4n step 1: −6(m) = −6(8 + 2n) [equation 1 is multiplied by −6.] 6m = 4 + 4n [equation 2] step 2: −6m = −48 − 12n [equation 1 in step 1 is simplified.] 6m = 4 + 4n [equation 2] step 3: −6m + 6m = −48 − 12n + 4n [equations in step 2 are added.] step 4: 0 = −48 − 8n step 5: n = −6 in which step did the student first make an error? step 3 step 5 step 4 step 2
Answers: 1
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The work of a student to solve a set of equations is shown: equation 1: m = 8 + 2n equation 2: 6m...
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