Answer:
20
Step-by-step explanation:
8/2 equals 4 and 5 x 4 = 20.
720
6*5*4*3*2*1=720
x = 31.2
x - 19.7 = -4.1
x = 15.6 --- add 19.7 to both sides to get rid of -19.7
x = 31.2 --- multiply both sides by 2 to get rid of