Question

1.Simplify (27 - 3/45 – 20)-(3/12 - 2/80)​

Answer 1

вот твоё решение и ответ

Answer 2

To simplify the expression (27 - 3/45 - 20) - (3/12 - 2/80), we can follow a few steps:

Step 1: Simplify within parentheses: (27 - 3/45 - 20) - (3/12 - 2/80) = (27 - 1/15 - 20) - (1/4 - 1/40)

Step 2: Perform addition and subtraction operations from left to right: = (27 - 1/15 - 20) - (1/4 - 1/40) = (27 - 20 - 1/15) - (1/4 - 1/40) = 7 - 1/15 - 1/4 + 1/40

Step 3: Find a common denominator for fractions: = 7 - (4/4)(1/15) - (15/15)(1/4) + (1/40) = 7 - 4/60 - 15/60 + 1/40

Step 4: Combine like terms: = 7 - 4/60 - 15/60 + 1/40 = 7 - 19/60 + 1/40

Step 5: Convert all fractions to have a common denominator: = (7)(60/60) - (19/60)(1/1) + (1/40)(3/3) = 420/60 - 19/60 + 3/120

Step 6: Combine like terms: = (420 - 19 + 3)/60 = 404/60

Step 7: Simplify the fraction, if possible: = 202/30

Step 8: Further simplify the fraction: = 101/15

Therefore, the simplified expression is 101/15.