1. By combining like terms 2. Same variable = same term, so you can combine them 3. Because 2y - y = 1y , and 1y is the same as y because a y is one y (obviously) 4. 1/2 + 1/2 = 1. A half an x and a half an x makes one whole x, therefore, x 5. No. You solve them like you would a normal equation with like terms. So it would be 3z^2
Hopefully these are right, I’m a bit rusty! 6. 4x 7. 3y 8. y - 4.5 9. 3.5x + 2 10. 4y + 2 11. 7x 12. 2.2w - 0.5 13. 23b + 6.6 14. 3.75x + 1.5 15. 0.8x + 2.1 Good luck, I hope this helped
