Question

а=-4,b=-7,х=-5,у=8 упростить выражение и вычислить его значение 1).2х+4х-16х,2)9а+6х-17а-5х+а,3)11у-5у+9-14у+11,4)-26а+12в-5а-2в

Answer 1

Ответ:

Пошаговое объяснение:

1).2х+4х-16х=-10х=-10*(-5)=50

2)9а+6х-17а-5х+а=-7а+х=-7*(-4)+(-5)=28-5=23

3)11у-5у+9-14у+11=-8у+20=-8*8+20=-64+20=-44

4)-26а+12в-5а-2в=-21в=-21*(-7)=147

Answer 2

To simplify and evaluate each expression, we will substitute the given values for the variables and then perform the necessary calculations:

1. 2х + 4х - 16х

Substitute х with -5: 2(-5) + 4(-5) - 16(-5)

Perform the calculations: -10 - 20 + 80 = 50

So, the value of the expression is 50.

2. 9а + 6х - 17а - 5х + а

Substitute а with -4 and х with -5: 9(-4) + 6(-5) - 17(-4) - 5(-5) + (-4)

Perform the calculations: -36 - 30 + 68 + 25 - 4 = 23

So, the value of the expression is 23.

3. 11у - 5у + 9 - 14у + 11

Substitute у with 8: 11(8) - 5(8) + 9 - 14(8) + 11

Perform the calculations: 88 - 40 + 9 - 112 + 11 = -44

So, the value of the expression is -44.

4. -26а + 12в - 5а - 2в

Substitute а with -4 and b with -7: -26(-4) + 12(-7) - 5(-4) - 2(-7)

Perform the calculations: 104 - 84 + 20 + 14 = 54

So, the value of the expression is 54.