Answer:
4
Step-by-step explanation:
To find the number you have to reverse the equation
Let us call the number "x"
x + 9 = 13
So to find x we flip the equation
13 - 9 = x
Solve it
4 = x
So the missing number is 4
Answer:
B, D and also E
Step-by-step explanation:
Answer:
92
Step-by-step explanation:
Answer: -11x+15
Step-by-step explanation: distributed property: 2x+2-3x-7-10x+20, -11x+15
Answer:
12 x 12+144
Step-by-step explanation:
