Answer:
x=6
Step-by-step explanation:
7x =42
7 7
x=6
Divide 7 on both sides
Answer:
2x4 8.2
Step-by-step explanation:
I know that the first one is the (sum) of a number x and 8.1 but im not sure about the rest im sorry
Answer:
b
Step-by-step explanation:

(3, -3/2)
Answer:
See below.
Step-by-step explanation:
9: 1 * 5 *4 = 20
10: -1 * -1 * 2 * 7 = 14
11: (-6) * (3) = (-1 * 6) * 3 = -1 * -1 * -6 * 3 = -18
12: (-4) * (-8) = (-1 * 4) * (-1 * 8) = -1 * -1 * -4 * -8 = 32