Salutations!
What river forms a large portion of the border between the United states and Mexico?
The Rio Grande River forms a large portion of the border between the United States and Mexico. The Rio Grande River is a global river that separates Mexico and the United States. It starts from Colorado, and then dribbles till Gulf of Mexico.
Hope I helped :D
Answer:
You answered your own question ;-;
Explanation:
Well to find this out you need to make an equation
s+7=j
So for example if Johnny's sister is 15 then Johnny would be 22 because
s(sister's age) +7(number of years difference between their ages)=22(Johnny's age)