Question

2а + 8 b при а =7/8, b= 5/32 Решить по действиям

Answer 1

Ответ:

3

Объяснение:

2а + 8 b при а =7/8, b= 5/32

2*7/8+8*5/32=(2*7)/8+(8*5)/32=7/4+5/4=12/4=3

Answer 2

To solve the expression 2a + 8b with a = 7/8 and b = 5/32, we substitute the given values into the expression and perform the calculations step by step.

Let's start with the value of a:

a = 7/8

Now substitute this value into the expression:

2(7/8) + 8b

Next, let's substitute the value of b:

b = 5/32

Now substitute this value into the expression:

2(7/8) + 8(5/32)

First, simplify the expression within the parentheses:

2(7/8) = 14/8 = 7/4

Next, multiply 8 by 5/32:

8(5/32) = 40/32 = 5/4

Now substitute the simplified values into the expression:

7/4 + 5/4

To add the fractions, they need to have the same denominator. In this case, the denominators are already the same, so we can add the numerators:

(7 + 5)/4 = 12/4 = 3

Therefore, the solution to the expression 2a + 8b, where a = 7/8 and b = 5/32, is 3.