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Simplifying sqrt(21x + 1) + sqrt(13x + -1) = 4 Reorder the terms: qrst(1 + 21x) + sqrt(13x + -1) = 4 (1 * qrst + 21x * qrst) + sqrt(13x + -1) = 4 (1qrst + 21qrstx) + sqrt(13x + -1) = 4 Reorder the terms: 1qrst + 21qrstx + qrst(-1 + 13x) = 4 1qrst + 21qrstx + (-1 * qrst + 13x * qrst) = 4 1qrst + 21qrstx + (-1qrst + 13qrstx) = 4 Reorder the terms: 1qrst + -1qrst + 21qrstx + 13qrstx = 4 Combine like terms: 1qrst + -1qrst = 0 0 + 21qrstx + 13qrstx = 4 21qrstx + 13qrstx = 4 Combine like terms: 21qrstx + 13qrstx = 34qrstx 34qrstx = 4 Solving 34qrstx = 4 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Divide each side by '34rstx'. q = 0.1176470588r-1s-1t-1x-1 Simplifying q = 0.1176470588r-1s-1t-1x-1
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