Multiply and Divide Fractions: exemplo 4.26

Problema e solução em inglês, como no livro original.

Multiply, and write the answer in simplified form: $- \frac{5}{8} (- \frac{2}{3}) .$

Resolva no papel primeiro. Depois abra a solução um passo de cada vez e pare assim que conseguir terminar sozinho.

Sua vez

O Try It do livro logo depois deste exemplo: mesma ideia, outros números. Só a resposta é dada.

Multiply, and write the answer in simplified form: $- \frac{4}{7} (- \frac{5}{8}) .$

Como foi?

	$- \frac{5}{8} (- \frac{2}{3})$
The signs are the same, so the product is positive. Multiply the numerators, multiply the denominators.	$\frac{5 \cdot 2}{8 \cdot 3}$
Simplify.	$\frac{10}{24}$
Look for common factors in the numerator and denominator. Rewrite showing common factors.
Remove common factors.	$\frac{5}{12}$

	$- \frac{5}{8} (- \frac{2}{3})$
Determine the sign of the product. Multiply.	$\frac{5 \cdot 2}{8 \cdot 3}$
Show common factors and then remove them.
Multiply remaining factors.	$\frac{5}{12}$

	$- \frac{5}{8} (- \frac{2}{3})$
The signs are the same, so the product is positive. Multiply the numerators, multiply the denominators.	$\frac{5 \cdot 2}{8 \cdot 3}$
Simplify.	$\frac{10}{24}$
Look for common factors in the numerator and denominator. Rewrite showing common factors.
Remove common factors.	$\frac{5}{12}$

	$- \frac{5}{8} (- \frac{2}{3})$
Determine the sign of the product. Multiply.	$\frac{5 \cdot 2}{8 \cdot 3}$
Show common factors and then remove them.
Multiply remaining factors.	$\frac{5}{12}$