Answer:
k= m/7
Step-by-step explanation:
We are given this equation :

We have to solve it for y, so we need to isolate y on the left side,
first we have 3x on the left side in addition, so when we take it to the right side we apply opposite operation that is subtract 3x

Next y is in multiplication with 5, so we apply opposite operation of multiplication that is division, so dividing right side by 5

Answer:x=2
Step-by-step explanation:
X=-b/2a
b=-4 a=1 in front of x
X=- - -4/2
X=4/2=2