Question

Розв'яжи рівняння: а) -x=-(-5) b)-y=-(+22) в)-y-4=22 г)-x:2=8

Answer 1

Відповідь:а) x=-5

б) y=22

в) y=-26

г) x=-16

Покрокове пояснення:

Answer 2

a) -x = -(-5)

To solve this equation, we can simplify it by removing the double negatives:

-x = 5

Now, to isolate the variable x, we can multiply both sides of the equation by -1:

(-1)(-x) = (-1)(5) x = -5

Therefore, the solution to the equation -x = -(-5) is x = -5.

b) -y = -(+22)

Similarly, we can simplify this equation by removing the double negatives:

-y = -22

To isolate the variable y, we can multiply both sides of the equation by -1:

(-1)(-y) = (-1)(-22) y = 22

Therefore, the solution to the equation -y = -(+22) is y = 22.

c) -y - 4 = 22

To solve this equation, we'll isolate the variable y by moving the constant term (-4) to the other side of the equation:

-y = 22 + 4 -y = 26

Now, to solve for y, we can multiply both sides of the equation by -1:

(-1)(-y) = (-1)(26) y = -26

Therefore, the solution to the equation -y - 4 = 22 is y = -26.

d) -x/2 = 8

To solve this equation, we'll isolate the variable x by multiplying both sides of the equation by 2:

2 * (-x/2) = 2 * 8 -x = 16

To solve for x, we can multiply both sides of the equation by -1:

(-1)(-x) = (-1)(16) x = -16

Therefore, the solution to the equation -x/2 = 8 is x = -16.