Answer:
1
Step-by-step explanation:
listing the factors of both numbers
factors of 10 are 1, 2, ,5, 10
factors of 3 are 1, 3
the only common factor to both is 1
the greatest common factor is 1

now
standard form for a linear equation means
• all coefficients must be integers, no fractions
• only the constant on the right-hand-side
• all variables on the left-hand-side, sorted
• "x" must not have a negative coefficient
therefore,

4-2=2
6*2=12
2+12=14
14 is the answer
13 units.
Since both are negative, and they’re just asking for distance between, you can just subtract 12 from 25 to get 13.