Answer two questions about equation a and b.
a. x/4 + 1= -3
b x+4 = -12

B A)x(4B + A) (1 x)(x 4) (А - B)x + (44 + B) (1 x)(x4) 5х + 10 (1 x)(x 4) + А + В 5 b.

(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