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Simplifying 2s + -20 = -30 + 7s Reorder the terms: -20 + 2s = -30 + 7s Solving -20 + 2s = -30 + 7s Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-7s' to each side of the equation. -20 + 2s + -7s = -30 + 7s + -7s Combine like terms: 2s + -7s = -5s -20 + -5s = -30 + 7s + -7s Combine like terms: 7s + -7s = 0 -20 + -5s = -30 + 0 -20 + -5s = -30 Add '20' to each side of the equation. -20 + 20 + -5s = -30 + 20 Combine like terms: -20 + 20 = 0 0 + -5s = -30 + 20 -5s = -30 + 20 Combine like terms: -30 + 20 = -10 -5s = -10 Divide each side by '-5'. s = 2 Simplifying s = 2
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