500-(28×5+25×4-120÷2)÷6-(28÷14+420÷140)×30

Предыдущий
вопрос Следующий
вопрос

To simplify the expression, we'll follow the order of operations (parentheses, exponents, multiplication and division, addition and subtraction) step by step.

Calculate what is inside the parentheses first:
28×5 = 140
25×4 = 100
120÷2 = 60
Add the first two results and then subtract the third:
140 + 100 - 60 = 180

Calculate the expression inside the second set of parentheses next:
28÷14 = 2
420÷140 = 3
Add the two results:
2 + 3 = 5

Now substitute these results back into the original expression:
500 - (180)÷6 - (5)×30
This becomes:
500 - 30 - 150

Finally, calculate the remaining subtraction:
500 - 30 - 150 = 320

Therefore, the simplified expression is 320.