1) 2x+3+3x-9=5x-6
2) 2x^3+6x-2+x^3-1=3x^3+6x-3
3)2x^2+6x+2+x^2+x-3=3x^2+7x-1
4) a^3+5a^2-10+a^3-17=2a^3+5a^2-27
1) 2x+3+3x-9=5x-6
2) 2x^3+6x-2+x^3-1=3x^3+6x-3
3)2x^2+6x+2+x^2+x-3=3x^2+7x-1
4) a^3+5a^2-10+a^3-17=2a^3+5a^2-27