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Simplifying 21 * 9x + -7 = 13 + -4x Multiply 21 * 9 189x + -7 = 13 + -4x Reorder the terms: -7 + 189x = 13 + -4x Solving -7 + 189x = 13 + -4x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4x' to each side of the equation. -7 + 189x + 4x = 13 + -4x + 4x Combine like terms: 189x + 4x = 193x -7 + 193x = 13 + -4x + 4x Combine like terms: -4x + 4x = 0 -7 + 193x = 13 + 0 -7 + 193x = 13 Add '7' to each side of the equation. -7 + 7 + 193x = 13 + 7 Combine like terms: -7 + 7 = 0 0 + 193x = 13 + 7 193x = 13 + 7 Combine like terms: 13 + 7 = 20 193x = 20 Divide each side by '193'. x = 0.103626943 Simplifying x = 0.103626943
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