bekkah323
  • bekkah323
solve, 7-3(2x-1)=40
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
Use Distributive Property....
mathstudent55
  • mathstudent55
First, distribute the -7 by what is inside the parentheses to get rid of the parentheses. Remember that when you multiply a negative number by what is inside the parentheses, all the signs inside will change.
bekkah323
  • bekkah323
i don't understand where the -7 came from?

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bekkah323
  • bekkah323
i got -5 as x
mathstudent55
  • mathstudent55
Sorry. Distribute the -3.
mathstudent55
  • mathstudent55
my mistake
bekkah323
  • bekkah323
so is it -5=x?
anonymous
  • anonymous
X=-5
mathstudent55
  • mathstudent55
Since I made a mistake above and confused you, I'm going to explain it step by step now. 7-3(2x-1)=40 First step is to get rid of the parentheses you need to distribute the -3: 7 - 6x + 3 = 40 Now add 7 and 3 on the left side 10 - 6x = 40 Now subtract 10 from both sides -6x = 30 Divide both sides by -6 x = -5 You are correct, answer is x = -5

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