Question

1) -2*(54-129)= 2) (6/5-3/4)*2/3 (это дроби)

Answer 1

1)-2×(54-129)=-2×(-75)=150
2)(6/5-3/4)×2/3=(24/20-15/20)×2/3=9/20×2/3=3/10=0,3

Answer 2

-2*(54-129)

= -2*(-75) //perform subtraction inside the parentheses

= 150 //multiply -2 with -75

Therefore, -2*(54-129) = 150.

(6/5-3/4)*2/3

To simplify this expression, we need to find a common denominator for the two fractions inside the parentheses.

The common denominator is 20, so we have:

(24/20 - 15/20) * 2/3

= (9/20) * 2/3 //subtract the numerators and simplify the fraction

= 18/60 //multiply the numerators and denominators

= 3/10 //simplify the fraction

Therefore, (6/5-3/4)*2/3 = 3/10.