X+x+20+2x=180
4x+20=180
4x=160
x=40
Answer:
R2->R3
Step-by-step explanation:
Answer:
5y+5
Step-by-step explanation:
I hope this is right
Answer:
13 x^2 -6x -9
Step-by-step explanation:
8x^2-4x-3+5x^2-2x-6
Combine like terms
8x^2+5x^2 -4x-2x -6-3
13 x^2 -6x -9
The answer is 67.45% but you can round it to a 67%