Question

3/8 × 5 + 5/56- 1/7 : 1/5

Answer 1

1)3/8*5=15/8
2)1/7:1/5=1/7*5/1=5/7
3)15/8+5/56=105+5/56=110/56
4)110/56-5/7=110-40/56=70/56=5/4
Ответ:5/4

Answer 2

To solve the given expression, follow the order of operations (PEMDAS: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction):

Step 1: Perform the multiplication and division from left to right. 3/8 × 5 = 15/8 5/56 ÷ 1/7 = 5/56 × 7/1 = 35/56

Step 2: Add the results obtained from Step 1. 15/8 + 35/56

To add fractions, find a common denominator. In this case, the least common multiple (LCM) of 8 and 56 is 56.

Step 3: Convert the fractions to have a common denominator of 56. 15/8 × 7/7 = 105/56 35/56

Step 4: Add the fractions. 105/56 + 35/56 = 140/56

Step 5: Simplify the fraction, if possible. The fraction 140/56 can be simplified by dividing both the numerator and denominator by their greatest common divisor (GCD), which is 4. 140 ÷ 4 = 35 56 ÷ 4 = 14

The simplified fraction is 35/14.

Step 6: Perform the final operation of division. 35/14 ÷ 1/5 = 35/14 × 5/1 = 175/14

So, the result of the expression is 175/14 or 12.5 (when expressed as a decimal).