monyod
monyod
25-11-2014
Mathematics
contestada
how do i solve step by step s+2 1/2s+20=48 ?
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luana
luana
25-11-2014
[tex]s+2\frac{1}{2}s+20=48\\\\ 3,5s+20=48\ \ \ \ | subtract\ 20\\\\ 3,5s=28\ \ \ \ | divide\ by\ 3,5\\\\ s=8\\\\ Solution\ is\ s=8.[/tex]
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Аноним
Аноним
25-11-2014
s+(2+1/2)s+20=48
2/2s+5/2s=48-20
7/2s=28
7s=28*2=2(20+8)=40+16
7s=56
s=56/7
s=8
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