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natacha1705
@natacha1705
July 2022
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( 3 1/7x + 5 1/2) * 1 7/11 = 21
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Reach1992
( 3 1/7x + 5 1/2) * 1 7/11 = 21
(22/7х+11/2)*18/11=21
(22/7х*18/11)+(18/11*11/2)=21
((22*18)/(7*11))х+((18*11)/11*2))=21
(396/77)х+(198/22)=21
(396/77)х+9=21
(396/77)х=12
х=12/(396/77)
х=77/33
х=2 11/33
2 votes
Thanks 4
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Answers & Comments
(22/7х+11/2)*18/11=21
(22/7х*18/11)+(18/11*11/2)=21
((22*18)/(7*11))х+((18*11)/11*2))=21
(396/77)х+(198/22)=21
(396/77)х+9=21
(396/77)х=12
х=12/(396/77)
х=77/33
х=2 11/33