Question

ДАМ 30БАЛЛОВ 5/12a+3/4a-1/2a если a=2,4

Answer 1

5/12а+3/4а-1/2а=(5+9-6)/12а=8/12а=2/3а=2/7,2=1/3,6=2,(7) или 2,7778 или 5/18

Answer 2

5:12*2,4+3:4*2,4-1:2*2,4=1+3:4*2,4-1:2*2,4=1+1,8-1:2*2,4=1+1,8-1,2=1,6.

Answer 3

To find the value of the expression 5/12a + 3/4a - 1/2a when a = 2.4, follow these steps:

Step 1: Substitute the value of a into the expression:

5/12a + 3/4a - 1/2a

Step 2: Replace 'a' with 2.4 in the expression:

5/12(2.4) + 3/4(2.4) - 1/2(2.4)

Step 3: Calculate the values in the parentheses:

(5/12) * 2.4 = 1 (3/4) * 2.4 = 1.8 (1/2) * 2.4 = 1.2

Step 4: Simplify the expression:

1 + 1.8 - 1.2

Step 5: Perform the addition and subtraction:

1 + 1.8 = 2.8 2.8 - 1.2 = 1.6

So, the value of the expression 5/12a + 3/4a - 1/2a when a = 2.4 is 1.6.