Josh is hiking glacier national park. he has now hiked a total of 17 \text{ km}17 km17, start text, space, k, m, end text and is 2 \text{ km}2 km2, start text, space, k, m, end text short of being \dfrac12 2 1 start fraction,
1, divided by,
2, end fraction of the way done with his hike.
write an equation to determine the total length in kilometers (h)( h, )of josh's hike.
find the total length of josh's hike. \text{km}km

Ok here we go ..there are plenty of ways to solve such math problems but we will go for the smartest and easiest ..5x+2y=7  -2x+6y=9we rearrange them into the following ..by multiplying the 1st equation by 2 it becomes 10x + 4y = 14we rearrange it and so it becomes 10x = 14 - 4yas for the second equation we multiply it by 5 and rearrange it so it becomes as to the following ..-10x + 30y = 45rearranging so 10x = 30y -45now 10x equals both 14 - 4y and 30y -45so   14 - 4y = 30y -4531 = 26yy= 31/26 = 1.19 or around 1.2so by now we can calculate x easily as  -2x+6y=9so 2x = 6y -9 = 6 * 31/26 - 9 = -1.84  then x = - 0.92 or around -0.9best luck!