Answer: 18
Step-by-step explanation:
put each number in place of x and finish the equation. you will find that 5, 12, and 15 don’t work because they just simply don’t add up.
finally, put 18 in place of x.
18 + (18 - 10) = 26
18 + 8 = 26
26 = 26 ✔️
