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Simplifying 100 = 20 + 0.7y Solving 100 = 20 + 0.7y Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.7y' to each side of the equation. 100 + -0.7y = 20 + 0.7y + -0.7y Combine like terms: 0.7y + -0.7y = 0.0 100 + -0.7y = 20 + 0.0 100 + -0.7y = 20 Add '-100' to each side of the equation. 100 + -100 + -0.7y = 20 + -100 Combine like terms: 100 + -100 = 0 0 + -0.7y = 20 + -100 -0.7y = 20 + -100 Combine like terms: 20 + -100 = -80 -0.7y = -80 Divide each side by '-0.7'. y = 114.2857143 Simplifying y = 114.2857143
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