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irina1246 [14]
3 years ago
6

PLease help!!!!!!!!!!!!!!!!!!!!!!1

Mathematics
2 answers:
Andrew [12]3 years ago
5 0
4(5x-20)=-20
20x-80=-20 ======> Add 80 to both sides
20x-80+80=-20+80
20x=60======> Divide both sides by 20
20/20x=60/20
x=3
schepotkina [342]3 years ago
3 0
4(5x-20)= -20

20x-80= -20
      +80  +80
____________

20x=60
_______
      20

x=3
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