Question

(0.25•1,3+5:50)•1/2+1/5•(30-(5,6:0,7+2,5)+98-a=1000

Answer 1

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Answer 2

Как-то так))).......

Answer 3

Let's simplify the given expression step by step:

Step 1: Simplify the expressions inside parentheses: 0.25 • 1,3 + 5 : 50 = 0.25 • 1.3 + 0.1 = 0.325 + 0.1 = 0.425

Step 2: Simplify the division: 0.425 • 1/2 = 0.425/2 = 0.2125

Step 3: Simplify the multiplication: 1/5 • (30 - (5,6:0,7 + 2,5) + 98 - a = 1000)

Now, let's simplify the expression inside the parentheses:

Step 3.1: Divide (5,6 : 0,7): (5,6 : 0,7) = 5.6 / 0.7 = 8

Step 3.2: Add (8 + 2,5): (8 + 2,5) = 10.5

Step 3.3: Subtract from 30: (30 - 10.5) = 19.5

Now the equation becomes:

1/5 • (19.5 + 98 - a) = 1000

Step 4: Simplify further:

Step 4.1: Add (19.5 + 98): (19.5 + 98) = 117.5

Step 4.2: Multiply by 1/5: 117.5 • 1/5 = 117.5/5 = 23.5

Now the equation becomes:

23.5 - a = 1000

Step 5: Isolate 'a' on one side of the equation:

a = 23.5 - 1000

Step 6: Calculate 'a':

a = -976.5

So, the value of 'a' in the given expression is -976.5.