Answer:
x= 15
Step-by-step explanation:
4x+15=75
4x = 60
x = 15
Could you maybe add more info? like a story or something
Answer:
For
it will be plus or minus 
For
it will be plus or minus 
Step-by-step explanation:
Well for
it will be 5i
Because i = -1
I think the answer is 42.
Answer:
1 1/4
Step-by-step explanation:
x=2, y=3, and z=1
1/2(2)+3/4(3)=1+3/12=1 1/4