Question

1) 1 7/8 - 2/4*5 + 1/2

Answer 1

Пошаговое объяснение:

1 7/8-2/4×5+1/2=1 7/8-10/4+1/2=

=1 7/8-2 2/4+1/2=1 7/8-2 1/2+1/2=

=(1-2)+(7/8-4/8+4/8)= - 1+7/8= - 8/8+7/8=

= - 1/8= - 0,125

Answer 2

To solve the expression, let's break it down step by step:

1. Simplify the multiplication and division operations first: 2/4 * 5 = (2 * 5) / 4 = 10/4 = 5/2

2. Now, let's rewrite the expression with the simplified multiplication: 1 7/8 - 5/2 + 1/2

3. Convert the whole number into fractions: 1 = 8/8

4. Find a common denominator for the fractions involved: The common denominator for 8, 2, and 2 is 8.

5. Rewrite the fractions with the common denominator: (8/8) - (5/2) + (1/2) = (8/8) - (20/8) + (4/8)

6. Combine the fractions with the same denominator: (8/8 - 20/8 + 4/8) = (-8/8) = -1

Therefore, the value of the expression 1 7/8 - 2/4 * 5 + 1/2 is -1.