What is the value of n?

You need to start by finding the angles of the inside triangle. Notice how each given angle is on a straight line that is intersected by another line.

The angle of a straight line is 180°

Thus,

180-133=47
180-142=36

Now you have two angles inside the triangle

The angle sum of a triangle is 180°

By doing 180-47-36 you get the inside angle next to n which is 97.

Notice how n and 97 also sit on a straight line

Therefore you can solve for n by doing 180-97=n°

n=83°

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.