7x + 3y = m
3y = m - 7x
y = (m - 7x) / 3
4( r + 3 ) = t
r + 3 = t / 4
r = ( t - 3 )/ 4
2x + b = w
2x = w- b
x = ( w - b ) / 2
x (1 + y) = 2
x = 2 / 1 +y
Answer:
25 miles
Step-by-step explanation:
2 inches represents 10 miles ( divide both parts by 2 )
1 inch represents 5 miles , then
5 inches represents 5 × 5 = 25 miles
40%
-x/3 ≥ 5
L.C.M= 3
3 × -x/3 ≥ 5 × 3
-x ≥ 15
-x/-1 ≥ 15/-1
x ≤ -15
