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Simplifying 7x + 21y = 157.5 Solving 7x + 21y = 157.5 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-21y' to each side of the equation. 7x + 21y + -21y = 157.5 + -21y Combine like terms: 21y + -21y = 0 7x + 0 = 157.5 + -21y 7x = 157.5 + -21y Divide each side by '7'. x = 22.5 + -3y Simplifying x = 22.5 + -3y
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