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Triniti0806
Triniti0806 Triniti0806
  • 02-10-2016
  • Mathematics
Answered

what is 0.4(5+2x)-0.5=3(0.3x+0.7) I've solved this but I'm not sure I got the right answer

Verified Answer :

Anonymous Anonymous
  • 02-10-2016

If you have a graphing calculator one way to know you are right is put the left side in Y1 and the right side in Y2 then hit 2nd trace and intersection then find the intersection and the X value is your answer. If you don't have a graphing calculator then I'm sorry

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Anonymous Anonymous
  • 02-10-2016

0.4(5+2x)-0.5=3(0.3x+0.7)
2+0.8x-0.5=0.9x+2.1
0.8x-0.9x=2.1-2+0.5
-0.1x=2.5
x=-25

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