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Simplifying 7 + 4x = 19 + x Solving 7 + 4x = 19 + x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1x' to each side of the equation. 7 + 4x + -1x = 19 + x + -1x Combine like terms: 4x + -1x = 3x 7 + 3x = 19 + x + -1x Combine like terms: x + -1x = 0 7 + 3x = 19 + 0 7 + 3x = 19 Add '-7' to each side of the equation. 7 + -7 + 3x = 19 + -7 Combine like terms: 7 + -7 = 0 0 + 3x = 19 + -7 3x = 19 + -7 Combine like terms: 19 + -7 = 12 3x = 12 Divide each side by '3'. x = 4 Simplifying x = 4
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