Answer:
20. n + 4n - 7n - 1
Terms: 4 terms
Like terms: 3 like terms-- n, 4n, and 7n
Coefficients: 4, 7
Constants: 1
21. -3d + 8 - d - 2
Terms: 4 terms
Like terms: 2 like terms-- -3d, d
Coefficients: -3
Constants: 8, -2
22. 5x + 4 + 9x
Terms: 3 terms
Like terms: 2 like terms-- 5x, 9x
Coefficients: 5, 9
Constants: 4
23. 2 + 3d + d
Terms: 3 terms
Like terms: 2 like terms-- 3d, d
Coefficients: 3
Constants: 2
24. -3r + 7 - 3r - 12
Terms: 5 terms
Like terms: 2 like terms-- -3r, -3r
Coefficients: 3, 3
Constants: 2
Explanation:
Terms are the contents in the equation of such. For example, 10+4n. There are two terms. Like terms, are when the terms have the same variable. For example, 4m and 8m. Coefficients are the number next to a variable. For example, 9x. 9 is the coefficient. Constants are numbers without a variable. Numbers like 7, 8, 9, 10-- they don't have variables so they are constants in an equation. Now, knowing this information lets get to work!
20. n + 4n - 7n - 1
Terms: 4 terms
Like terms: 3 like terms-- n, 4n, and 7n
Coefficients: 4, 7
Constants: 1
21. -3d + 8 - d - 2
Terms: 4 terms
Like terms: 2 like terms-- -3d, d
Coefficients: -3
Constants: 8, -2
22. 5x + 4 + 9x
Terms: 3 terms
Like terms: 2 like terms-- 5x, 9x
Coefficients: 5, 9
Constants: 4
23. 2 + 3d + d
Terms: 3 terms
Like terms: 2 like terms-- 3d, d
Coefficients: 3
Constants: 2
24. -3r + 7 - 3r - 12
Terms: 5 terms
Like terms: 2 like terms-- -3r, -3r
Coefficients: 3, 3
Constants: 2
Hope this helps!!
-Ketifa