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2x - 5 = 11 2x = 11 + 5 2x = 16 2x /2 = 16 /2 x = 8
2x+5y=20 Solve for y -2x -2x 5y=20-2x 5 5 5 y=4-2x 5
how do you solve 8+x=x+8
you add 4 to both sides (2x-4 and 16) to cancel out the 4 and get 2x=20. then you divide both sides by 2.
-2x^4+16 +2x^4+9-3x^5=-3x^5+25. There is no "answer" because there is no equation.