Can anybody me on simplying expressions w/ rational numbers? ?

Step-by-step explanation:

You need to remember the multiplication of signs:

And the the Distributive property. This states that:

In this case, given the following expression:

 In order to to create an equivalent expression, the first step is to apply the Distributive property. Then:

You can identify that the like terms are:

and

So, you can combine these like terms. This means that you must add them. Since both terms have equal denominator, you need to rewrite the denominator and just add the numerators.

Then, you get:

solution:

we have to construct

∠m nt ≅ ∠p qr

the steps to draw this construction are

step 1: use a compass to draw an arc from point q which intersects the side pq at point a and the side qr at point b.

step 2: draw a segment nt and use the same width of the compass to draw an arc from point n which intersects the segment nt at a point x.

step 3:

step 4: join points n and y using a straightedge.

step 3:

option (d).maintaining the same width of the compass as ab, draw an arc from point x such that it intersects the arc drawn from n in a point y.

to draw   congruent angles , 1. width of compasses while drawing two angles should be same i.e from point at which angle has to be drawn, 2.the distance between the two points where the compass intersects the two sides should be same while drawing any two congruent angles.