Question

5/12:0,2+7/12*5 рациональным способом

Answer 1

0,2= 1/5
5/12: 1/5+ 7/12 *5= 5/12* 5+ 7/12*5= 5/12( 5+7)= 5/12 * 12= 5

Answer 2

$\frac{5}{12}:0,2+ \frac{7}{12} *5= 5$

$1) \frac{5}{12} :0,2= \frac{5}{12}: \frac{2}{10}= \frac{5*10}{12*2}= \frac{5*5}{12}= \frac{25}{12}= 2 \frac{1}{12}$

$2) \frac{7}{12} *5= \frac{7*5}{12}= \frac{35}{12}= 2\frac{11}{12}$

$1)2 \frac{1}{12}+2 \frac{11}{12}=4 \frac{12}{12}= 5$

Answer 3

To solve the expression "5/12:0.2+7/12*5" rationally, follow these steps:

Step 1: Simplify the division and multiplication operations first, as per the order of operations (PEMDAS/BODMAS).

1. Divide 5/12 by 0.2: 5/12 ÷ 0.2 = (5/12) ÷ (1/5) [Note: 0.2 is equivalent to 1/5] = 5/12 * 5/1 = (5 * 5) / (12 * 1) = 25/12

2. Multiply 7/12 by 5: 7/12 * 5 = (7 * 5) / 12 = 35/12

Step 2: Now, we have "25/12 + 35/12".

Step 3: Add the two fractions: (25/12) + (35/12) = (25 + 35) / 12 = 60/12 = 5

So, the rational result of the expression "5/12:0.2+7/12*5" is 5.