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Simplifying 640 = 5(2) * x Multiply 5 * 2 640 = 10x Solving 640 = 10x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10x' to each side of the equation. 640 + -10x = 10x + -10x Combine like terms: 10x + -10x = 0 640 + -10x = 0 Add '-640' to each side of the equation. 640 + -640 + -10x = 0 + -640 Combine like terms: 640 + -640 = 0 0 + -10x = 0 + -640 -10x = 0 + -640 Combine like terms: 0 + -640 = -640 -10x = -640 Divide each side by '-10'. x = 64 Simplifying x = 64
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