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DAU COROANĂ

a/b=3/4. deci a<b
2×(a-7)= b+4
/_______/______/_______/_______/b+4
/_______/______/_______/a-7
2a-14=b+4
2×3b/4-14=b+4
3b/2-²b=14+4
(3b-2b)/2=18
b=18×2=36
a=3×36/4=27
[tex].[/tex]