Answer:
(a - b)(5x - 2y)
Step-by-step explanation:
5x(a - b) – 2y(a - b) =
The factors in parentheses (shown in bold) are a common factor.
Factor (a - b) out from both terms.
= (a - b)(5x - 2y)
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x = 3
Given 9 + 3f = 2f
9 = 2f - 3f
9 = -f
f = -9
