+108 can someone help me learn how figure out how to do questions like my last 2 posts? It's these questions: -19y = -15 – 16y
+280 Sure!
-19y = -15 – 16y
First, add 16y to the left side and the right side.
-19y + 16y = -15 - 16y + 16y
This cancels out - 16y from the left, making it easier to solve.
-3y = -15y
Change both signs to a positive (Only if both sides are negative or already positive)
3y = 15
Divide by 3 on both sides.
3y/3 = 15/3
Solve.
y = 5
When you divide 3y by 3, it cancels out the three, because 3/3 is 1, and 1y = y.
So your answer is y = 5
+280 10m – 2 = 9m – 14
Subtract 9m from both sides.
10m - 9m – 2 = 9m - 9m – 14
Solve.
m - 2 = (-14)
Add 2 to both sides. (Do the opposite of the sign it shows. Negative = Positive. Times = Divide)
m - 2 + 2 = (-14) + 2
Solve.
m = (-12)
Always make sure m positive.
