Help me solve this proportionalequation
%20%5Cfrac%7B7%7D%7B3%7D%20" id="TexFormula1" title=" \frac{9 + x}{9} = \frac{7}{3} " alt=" \frac{9 + x}{9} = \frac{7}{3} " align="absmiddle" class="latex-formula">
1 answer:
Cross multiplication, 3(9+x) = 63
27+3x = 63
3x = 63-27 = 36
x=36/3=12
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