Question

-2/3*(3/4-1.5-3.5)=; 4/7(5/11-3/7)=

Answer 1

Ответ:

Пошаговое объяснение:

-2/3*(3/4-1.5-3.5)=2 5/6

-1,5-3,5=-5

3/4-5=-4 1/4

-2/3*(-4 1/4)=-2/3*(-17/4)=17/6=2 5/6

4/7-(5/11-3/7)=6/11

5/11-3/7=35/77-33/77=2/77

4/7-2/77=44/77-2/77=42/77=6/11

Answer 2

Let's solve each expression step by step:

1. Expression: -2/3 * (3/4 - 1.5 - 3.5)

Step 1: Perform the operations inside the parentheses. = -2/3 * (3/4 - 5)

Step 2: Find a common denominator for 4 and 3, which is 12. = -2/3 * ((3/4) * (3/3) - (5 * 4/4))

Step 3: Continue simplifying. = -2/3 * ((9/12) - (20/4))

Step 4: Find a common denominator for 12 and 4, which is 12. = -2/3 * ((9/12) - (60/12))

Step 5: Subtract the fractions inside the parentheses. = -2/3 * (-51/12)

Step 6: Multiply the fractions. = 102/36

Step 7: Simplify the fraction (divide numerator and denominator by their greatest common divisor). = 17/6

So, -2/3 * (3/4 - 1.5 - 3.5) = 17/6.

2. Expression: 4/7 * (5/11 - 3/7)

Step 1: Perform the operations inside the parentheses. = 4/7 * (5/11 - 3/7)

Step 2: Find a common denominator for 11 and 7, which is 77. = 4/7 * ((5 * 7/77) - (11 * 11/77))

Step 3: Continue simplifying. = 4/7 * ((35/77) - (121/77))

Step 4: Subtract the fractions inside the parentheses. = 4/7 * (-86/77)

Step 5: Multiply the fractions. = -344/539

Step 6: Simplify the fraction (divide numerator and denominator by their greatest common divisor). = -172/269

So, 4/7 * (5/11 - 3/7) = -172/269.