-k/7 = -4
k/7 = 4
k = 7 × 4
k = 28
Answer:
320
Step-by-step explanation:
distance=speed*time= 8 *40.
Answer:
Can you show the full problem so that I can help
X + 3y = 7
x = -3y + 7
2x + 4y = 8
2(-3y + 7) + 4y = 8
-6y + 14 + 4y = 8
-2y = 8 - 14
-2y = - 6
y = -6/-2
y = 3
x + 3y = 7
x + 3(3) = 7
x + 9 = 7
x = 7 - 9
x = -2
solution is (-2,3)