18/12 = x/8
12x = 8 * 18
x = 8 * 1.5
x = 12
Answer: C. 12
Answer:
57
Step-by-step explanation:
( 27 + 19 + 41 + 51 + 29 + 35 + k ) / 7 = 37
202 + k = 37 x 7
202 + k = 259
k = 259 - 202
k = 57
9
57 + 32x equals 435 - 10x
42 x equals 378
x equals 9