Practice problem
Simplify 7(x+3)21÷3x+97x.\frac{7(x+3)}{21} \div\frac{3x+9}{7x}.217(x+3)÷7x3x+9.
(x+3)27x\frac{(x+3)^2}{7x}7x(x+3)2
7x9\frac{7x}{9}97x
(7x+9)(x+3)21x\frac{(7x+9)(x+3)}{21x}21x(7x+9)(x+3)
79\frac{7}{9}97
Type a concept, like “slope” or “photosynthesis”.
