5x+4+7x
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To subtract 7x^3 - 5x^4, you first need to rearrange the terms in descending order of the exponents. So, the expression becomes -5x^4 - 7x^3. Since the terms have different exponents, you cannot directly subtract them. The result is simply -5x^4 - 7x^3.
5x-6+23-7x 5x-7x+23-6 (rearranged) -2x+17 (simplification).
To simplify the expression 18 + 7x - 12 + 5x, you first combine like terms. Combine the constants (18 and -12) to get 6. Then, combine the x terms (7x and 5x) to get 12x. Therefore, the simplified expression is 6 + 12x.
(4, -2)
65 = 2x - 7x 65 = -5x 65/-5 = -5x/-5 -13 = x