Match each expression to its simplest form
(6r+7)+(13+7r)
(13 - 3/2 r) - (1 - r)
(-8 - r) + (2r - 4)
(7r - 3/2) -(2/3 + 6r)

12 - 1/2 r →
r - 13/6 →
13r+20 →
—12+r →

(6r+7)+(13+7r)=13r+20

(13-3/2r)-(1-r)=12-1/2r

(-8-r)+(2r-4)= -12+r

(7r-3/2)-(2/3+6r)=r -13/6!

✌️

(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47

the multiples of 15 are 15, 30,45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195,   210, 225, 240, 255, 270, 285, 300, 315, 330, 345, 360, 375,   390, 405, 420, 435, 450, 465, 480, 495, 510, 525, 540, 555, 570, 585, 600, 615, 630, 645, 660, 675, 690, 705, 720, and 735.

the factors of 15 are 1, 3, 5, and 15.

hope that , fam!

-une, your fren : )