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Simplifying 2 + 0.8y = -7 + 0.4y Solving 2 + 0.8y = -7 + 0.4y Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.4y' to each side of the equation. 2 + 0.8y + -0.4y = -7 + 0.4y + -0.4y Combine like terms: 0.8y + -0.4y = 0.4y 2 + 0.4y = -7 + 0.4y + -0.4y Combine like terms: 0.4y + -0.4y = 0.0 2 + 0.4y = -7 + 0.0 2 + 0.4y = -7 Add '-2' to each side of the equation. 2 + -2 + 0.4y = -7 + -2 Combine like terms: 2 + -2 = 0 0 + 0.4y = -7 + -2 0.4y = -7 + -2 Combine like terms: -7 + -2 = -9 0.4y = -9 Divide each side by '0.4'. y = -22.5 Simplifying y = -22.5
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