Caroline is solving the equation 10(3x+1)-(9x-5)=26. Her steps are shown below, In which step does a mistake first appear? Step 1: 30x+10-(9x-5)=26 Step 2: 30x+10-9x-5=26 Step 3: 21x+10-5=26 Step 4: 21x+5=26 Step 5: 21x=21 Step 6: x=1
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Answer:
10(3x+1)-(9x-5)=26.
Step-by-step explanation:
10(3x+1)-(9x-5)=26. =30x+10-(9x-5)
=30x+10-9x+5=26
=21x+15=26
21x=11
x=11/21
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