5x and -8x are like terms. 6 is not a variable. 5 is the coefficient of the term 5x. X is not the constant.
Answer:
20: 9t+12
21: 18x
22: 105x+9
24: 156r
25: 3x+11
26: 25.2x
28: 56a
29: 1.5n
30: 13q
Step-by-step explanation:
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The car is faster because it’s 120km/hr, wile the train is 75km/hr
Answer:
Step-by-step explanation:
Total cost b = 23.95 + 7.65c