Respuesta :
There is one way that you can do it that involves multiplication, division, addition, and subtraction, and that uses all the numbers only once.
[tex]9 \div 3\times (7+1)[/tex]
Solving it using PEMDAS, you get:
[tex]9\div3 \times 8\\\\3 \times 8\\\\24[/tex]
So your answer is [tex]9 \div 3\times (7+1)[/tex]
[tex]9 \div 3\times (7+1)[/tex]
Solving it using PEMDAS, you get:
[tex]9\div3 \times 8\\\\3 \times 8\\\\24[/tex]
So your answer is [tex]9 \div 3\times (7+1)[/tex]
There are two answers to this.
[tex] \frac{9!}{7!} \times \frac{1}{3}= \frac{9\times 8 \times 7!}{7!} \times\frac{1}{3} = 9 \times 8 \times\frac{1}{3} = 3\times 8 = 24[/tex]
But if you can only use addition, subtraction, multiplication, and division, you can also do:
[tex]\frac{9}{3} \times (7+1) = \frac{9}{3} \times 8 = 3 \times 8 = 24[/tex]
[tex] \frac{9!}{7!} \times \frac{1}{3}= \frac{9\times 8 \times 7!}{7!} \times\frac{1}{3} = 9 \times 8 \times\frac{1}{3} = 3\times 8 = 24[/tex]
But if you can only use addition, subtraction, multiplication, and division, you can also do:
[tex]\frac{9}{3} \times (7+1) = \frac{9}{3} \times 8 = 3 \times 8 = 24[/tex]