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Simplifying xsquared + 21x + 20 = 0 Reorder the terms: 20 + adeqrsux + 21x = 0 Solving 20 + adeqrsux + 21x = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + adeqrsux + -20 + 21x = 0 + -20 Reorder the terms: 20 + -20 + adeqrsux + 21x = 0 + -20 Combine like terms: 20 + -20 = 0 0 + adeqrsux + 21x = 0 + -20 adeqrsux + 21x = 0 + -20 Combine like terms: 0 + -20 = -20 adeqrsux + 21x = -20 Add '-21x' to each side of the equation. adeqrsux + 21x + -21x = -20 + -21x Combine like terms: 21x + -21x = 0 adeqrsux + 0 = -20 + -21x adeqrsux = -20 + -21x Divide each side by 'deqrsux'. a = -20d-1e-1q-1r-1s-1u-1x-1 + -21d-1e-1q-1r-1s-1u-1 Simplifying a = -20d-1e-1q-1r-1s-1u-1x-1 + -21d-1e-1q-1r-1s-1u-1 Reorder the terms: a = -21d-1e-1q-1r-1s-1u-1 + -20d-1e-1q-1r-1s-1u-1x-1
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