Question

упростите выражение:1)-0,8a*0,45b*(-c)2)3*(1,6x-0,7y)-1,8x+0,1y3)m*(-0,75n)*(-0,6k)4)-5(0,9m-1,1n)-1,5m+1,9n

Answer 1

Все во вложениях_________

Answer 2

Упрощение выражений:

1) -0.8a * 0.45b * (-c)

To simplify this expression, we can start by multiplying the coefficients and combining like terms.

-0.8 * 0.45 = -0.36

Therefore, the simplified expression is:

-0.36abc

2) 3 * (1.6x - 0.7y) - 1.8x + 0.1y

To simplify this expression, we first distribute the 3 to both terms inside the parentheses:

3 * 1.6x - 3 * 0.7y - 1.8x + 0.1y

Now, we can combine like terms:

4.8x - 2.1y - 1.8x + 0.1y

Combining the x terms and the y terms separately, we get:

(4.8x - 1.8x) + (-2.1y + 0.1y)

Simplifying further:

3x - 2y

Therefore, the simplified expression is:

3x - 2y

3) m * (-0.75n) * (-0.6k)

To simplify this expression, we can multiply the coefficients:

-0.75 * -0.6 = 0.45

Therefore, the simplified expression is:

0.45mnk

4) -5(0.9m - 1.1n) - 1.5m + 1.