First to find what’s 2x you do 25-11=14, and you know that 7 x 2 =14.
So x= 7.
Answer:
Which problems ?
Step-by-step explanation:
Answer:
10
20
Step-by-step explanation:
correct c=3 x 10
incorrect i=-1
-------
incorrect= 10
number of questions= 10+10= 20
4/5 is the quotient or the answer