Q4) x+4 = 15
15-4 = x
x = 11
Q5)
18 + 12 = x
x - 12 = 18
30 - 12 = 18
x = 30
I hope this helped, please give this the Brainliest answer! :3
X is equal to 81 cuz you would subtract 14 from both sides then find out what multuplied by 4 is the square root of 18