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Simplifying f(x) = 87t + -21t2 Multiply f * x fx = 87t + -21t2 Solving fx = 87t + -21t2 Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Divide each side by 'x'. f = 87tx-1 + -21t2x-1 Simplifying f = 87tx-1 + -21t2x-1
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