automaticloveletter
  • automaticloveletter
Which of the following is a step that can be used to find the solution to the set of equations? 2d + 1 = 3d + 5 2d = 3d + 5 2d + 1 = 3d 2d + 5 = 3d + 1
Mathematics
jamiebookeater
  • jamiebookeater
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automaticloveletter
  • automaticloveletter
Equations: Equation A: c = 2d + 1 Equation B: c = 3d + 5 Is it A?
sdfgsdfgs
  • sdfgsdfgs
A is correct :)
automaticloveletter
  • automaticloveletter
The work of a student to solve a set of equations is shown: Equation A: y = 15 − 2z Equation B: 3y = 3 − 4z Step 1: −3(y) = −3(15 − 2z) [Equation A is multiplied by −3.] 3y = 3 − 4z [Equation B] Step 2: −3y = 15 − 2z [Equation A in Step 1 is simplified.] 3y = 3 − 4z [Equation B] Step 3: 0 = 18 − 6z [Equations in Step 2 are added.] Step 4: 6z = 18 Step 5: z = 3 In which step did the student first make an error? Step 4 Step 3 Step 2 Step 1

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sdfgsdfgs
  • sdfgsdfgs
wat do u think?
automaticloveletter
  • automaticloveletter
No clue xc 1st step?
sdfgsdfgs
  • sdfgsdfgs
read them through step by step plz....its not the 1st...
automaticloveletter
  • automaticloveletter
2?
sdfgsdfgs
  • sdfgsdfgs
why? whats wrong there?
automaticloveletter
  • automaticloveletter
I'm just guessing.
sdfgsdfgs
  • sdfgsdfgs
:( but u guess right - lucky gurl!! lol
automaticloveletter
  • automaticloveletter
So it's the second one?
sdfgsdfgs
  • sdfgsdfgs
Step 1: −3(y) = −3(15 − 2z) [Equation A is multiplied by −3.] Step 2: −3y = 15 − 2z [Equation A in Step 1 is simplified.] See anything wrong there??
automaticloveletter
  • automaticloveletter
The simplification?
automaticloveletter
  • automaticloveletter
sdfgsdfgs
  • sdfgsdfgs
yes - something went wrong there...

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