Which expression is equivalent to 12x+(−7)−214x−(−2)?

- 212 x - 5 .

Step-by-step explanation:

Given  : 12x + (−7) − 214x − ( −2).

To find : Which expression is equivalent.

Solution : We have given

12x + (−7) − 214x − ( −2).

We know that positive and negative is negative .

12x - 7 - 214x + 2 .

On combine like terms .

12 x - 214 x - 7 + 2 .

- 212 x - 5 .

Therefore, - 212 x - 5 .

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq

let's solve your equation step-by-step.

4x+2=2x+12

step 1: subtract 2x from both sides.

4x+2−2x=2x+12−2x

2x+2=12

step 2: subtract 2 from both sides.

2x+2−2=12−2

2x=10

step 3: divide both sides by 2.

2x

2

=

10

2

x=5

step-by-step explanation: