Answer:

Step-by-step explanation:
3+5=8
8÷8=1
Answer:
x=-1/3
Step-by-step explanation:
12-(3x+13)=0
12-3x-13=0
-3x-1=0
-3x=1
x=-1/3
Answer:
The question mark is 10. x is 2.
Step-by-step explanation:
The question mark is 10. Divide Both Sides by five. x=2.
Answer:
multiply by 5
Step-by-step explanation:
in order to get t by itself, you must do the incerverse operation of division, which is multiplication
5(t/5)=5(2.9)
the 5 crosses out and you get
t=14.5