Help please!!!
4x-9=-5x-99???
4 x - 9 = - 5 x - 99 Add 5 x to both sides
4 x - 9 + 5 x = -5 x - 99 + 5
9 x - 9 = - 99 Add 9 to both sides
9 x - 9 + 9 = - 99 + 9
9 x = - 90 Divide both sides by 9
9 x / 9 = - 90 / 9
x = - 10
Proof:
4 x - 9 = - 5 x - 99
4 * ( - 10 ) - 9 = - 5 * ( - 10 ) - 99
- 40 - 9 = 50 - 99
- 49 = - 49
4 x - 9 = - 5 x - 99 Add 5 x to both sides
4 x - 9 + 5 x = - 5 x - 99 + 5 x
Thank you so much, my hw is all mixed equations so yeah.
To solve the equation 4x - 9 = -5x - 99, we need to find the value of x that satisfies the equation. Here's how you can do it step by step:
Step 1: Combine like terms.
Combine the x terms on both sides of the equation:
4x + 5x - 9 = -99
9x - 9 = -99
Step 2: Isolate the variable term.
To isolate the variable term (9x), add 9 to both sides of the equation:
9x - 9 + 9 = -99 + 9
This simplifies to:
9x = -90
Step 3: Solve for x.
To find the value of x, divide both sides of the equation by 9:
9x/9 = -90/9
This simplifies to:
x = -10
Therefore, the solution to the equation 4x - 9 = -5x - 99 is x = -10.