Let’s solve the equation step by step.
We start with:
-4X + 7 = 15
Our goal is to find the value of X. To do that, we need to get X alone on one side of the equation.
Step 1: Get rid of the +7 on the left side.
To cancel out +7, we subtract 7 from both sides of the equation (because whatever we do to one side, we must do to the other to keep it balanced).
So:
-4X + 7 - 7 = 15 - 7
That simplifies to:
-4X = 8
Step 2: Now we have -4X = 8. We need to get X by itself, so we divide both sides by -4.
(-4X) ÷ (-4) = 8 ÷ (-4)
Which gives:
X = -2
Let’s double-check our answer by plugging X = -2 back into the original equation:
Original: -4X + 7 = 15
Plug in X = -2:
-4*(-2) + 7 = 8 + 7 = 15
✔
It matches! So our answer is correct.
Final Answer:
X = -2
Parent Tip: Review the logic above to help your child master the concept of algebra solver.
