if (3a+2b):(2a+5b)=12:19,then find a:b.
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3a+2b:2a+5b=12:19
19 (3a+2b)=12 (2a+5b)
57a+38b=24a+60b
57a-24a=60b-38b
33a=22b
33a/22=b
3a/2=b
3a=2b
This gives a:b = 3:2
19 (3a+2b)=12 (2a+5b)
57a+38b=24a+60b
57a-24a=60b-38b
33a=22b
33a/22=b
3a/2=b
3a=2b
This gives a:b = 3:2
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