R
(x + 1)
(3x - 5)
S
Р
What is mzPQR ?

(x+1)+(3x-5)=180
4x-4=180
4x=184
x=46

3(46)-5
138-5
133

mZ133*

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.