Question

-0,8x-(0,6x-0,7y) если 2x-y=-8срочно

Answer 1

Ответ:

8

Пошаговое объяснение:

$-0.8x-(0.6x-0.7y)=-1.4x+0.7y=-(2x-y)=-(-8)=8$

Answer 2

I can help you with your math problem.

To solve this problem, you need to substitute the value of y from the equation 2x-y=-8 into the expression -0.8x-(0.6x-0.7y). This will give you:

$$-0.8x-(0.6x-0.7(2x+8))$$

Then, you need to simplify the expression by expanding the brackets and combining the like terms. This will give you:

$$-0.8x-0.6x-1.4x-5.6$$ $$-2.8x-5.6$$

This is the final answer. You can check it by plugging in any value of x and y that satisfy the equation 2x-y=-8. For example, if x=2 and y=12, then:

$$-2.8(2)-5.6$$ $$-5.6-5.6$$ $$-11.2$$

This is the same as:

$$-0.8(2)-(0.6(2)-0.7(12))$$ $$-1.6-(1.2-8.4)$$ $$-1.6-(-7.2)$$ $$-1.6+7.2$$ $$-11.2$$

I hope this helps you understand how to solve this problem. If you have any other questions, feel free to ask me.Ответь+подробно.++-0,8x-(0,6x-0,7y)+если+2x-y=-8срочно+