To solve for x in the equation 2x + 3x + 4 + 5 = 0, we first combine like terms.
Step 1: Combine the x terms:
2x + 3x = 5x
So the equation can be rewritten as:
5x + 4 + 5 = 0
Step 2: Combine the constant terms:
4 + 5 = 9
This means our equation is now:
5x + 9 = 0
Step 3: Now, we will isolate x by moving 9 to the other side:
5x = -9
Step 4: To find x, divide both sides by 5:
x = -9 / 5
So, x = -1.8.
This means that the value of x that satisfies the equation 2x + 3x + 4 + 5 = 0 is -1.8.