Solve: 1/5 × 7/8 × 2⅔ Fraction Multiplication with Mixed Numbers

Question

Solve the following problem:

15×78×223= \frac{1}{5}\times\frac{7}{8}\times2\frac{2}{3}=

Video Solution

Solution Steps

00:00 Solution
00:03 We want to convert from a number and fraction to just a fraction
00:06 We'll do this by multiplying the whole number by the denominator
00:09 and raising it to the numerator
00:13 Make sure to multiply numerator by numerator and denominator by denominator
00:22 We'll reduce what we can
00:28 And this is the solution to the question

Step-by-Step Solution

First, let's convert the mixed fraction to an improper fraction as follows:

15×78×3×2+23= \frac{1}{5}\times\frac{7}{8}\times\frac{3\times2+2}{3}=

Let's solve the equation in the numerator:

15×78×6+23= \frac{1}{5}\times\frac{7}{8}\times\frac{6+2}{3}=

15×78×83= \frac{1}{5}\times\frac{7}{8}\times\frac{8}{3}=

Since the only operation in the equation is multiplication, we'll combine everything into one equation:

1×7×85×8×3= \frac{1\times7\times8}{5\times8\times3}=

Let's simplify the 8 in the numerator and denominator of the fraction:

1×75×3= \frac{1\times7}{5\times3}=

Let's solve the equations in the numerator and denominator and we get:

715 \frac{7}{15}

Answer

715 \frac{7}{15}