a) The three terms have variables m, n, n. The two like terms are the last two terms, which both have variable n: -3n, n.
b) The 5 terms have variables c, c, c, c, -. The like terms are the first four, which all have variable c: c, 2c, c, -5c.
Answer:
Step-by-step explanation:
C
2/4 its the answer
15x+10x=12x+90; ⇔ 13x=90;