Answer:
2/3
Step-by-step explanation:
Since you need to find the mising number, I will give it the variable (v)
So the equation is now:
1½v is the same as 1½ x v
3½ + (1½v) = 4½
I need to undo addition so I subtract. To undo you need to look at the sign at the front of the number, since there was no negative sign I can infer that 3½ is positive. I need 3½ to cancel out and become 0, so I subtracted 3½ with 3½. What you do to one side of the equal sign, do to the other. 4½ subtract 3½ is 1.
The equation is now:
1½v = 1
I need to undo multiplication, so I divide 1½ by 1½. It cancels out, and I what you do to one side of the equal sign, you do to the other. 1 divides by 1½ is 2/3. (I used a calculator for this part)
