Question 657412
Coefficients are the numbers in front of (multiplying) a variable.
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For example, x, 2r, 3w, 4q have the coefficients 1, 2, 3 and 4 respectively.
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Like terms are variables and the degree of variable.
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For example, 2a + 4b has two different terms.
{{{3x^2 - 6x^3}}} also has two different terms.
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To simplify 2a + 9a + 4b + 7b, combine like terms to get
11a + 11b
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To simplify {{{3x^3 + 15x^3 - 6x^2 + 20x^2}}}, combine like degree variable terms, to get
{{{18x^3 + 14x^2}}}
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