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Simplifying 157 = 20 + n Solving 157 = 20 + n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-1n' to each side of the equation. 157 + -1n = 20 + n + -1n Combine like terms: n + -1n = 0 157 + -1n = 20 + 0 157 + -1n = 20 Add '-157' to each side of the equation. 157 + -157 + -1n = 20 + -157 Combine like terms: 157 + -157 = 0 0 + -1n = 20 + -157 -1n = 20 + -157 Combine like terms: 20 + -157 = -137 -1n = -137 Divide each side by '-1'. n = 137 Simplifying n = 137
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