7x+4x+5x=0 7x+4x+5x=0 7x+4x+5x=0
x=? x=\text{?} x=?
Let's combine all the x terms together:
7x+4x+5x=11x+5x=16x 7x+4x+5x=11x+5x=16x 7x+4x+5x=11x+5x=16x
The resulting equation is:
16x=0 16x=0 16x=0
Now let's divide both sides by 16:
16x16=016 \frac{16x}{16}=\frac{0}{16} 1616x=160
x=016=0 x=\frac{0}{16}=0 x=160=0
0 0 0