Answer:
J=16
Step-by-step explanation:
You have to move all the number to the opposite side of the variable.
j-12=4
j=4+12
j=16
A. 141.4 cm
The piramide is 141.4cm
0.143
Please mark me as Brainliest if you are satisfied with the answer.
x = 20
(hope i helped)
