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Simplifying 7(4x + -10) = 14(2x + -5) Reorder the terms: 7(-10 + 4x) = 14(2x + -5) (-10 * 7 + 4x * 7) = 14(2x + -5) (-70 + 28x) = 14(2x + -5) Reorder the terms: -70 + 28x = 14(-5 + 2x) -70 + 28x = (-5 * 14 + 2x * 14) -70 + 28x = (-70 + 28x) Add '70' to each side of the equation. -70 + 70 + 28x = -70 + 70 + 28x Combine like terms: -70 + 70 = 0 0 + 28x = -70 + 70 + 28x 28x = -70 + 70 + 28x Combine like terms: -70 + 70 = 0 28x = 0 + 28x 28x = 28x Add '-28x' to each side of the equation. 28x + -28x = 28x + -28x Combine like terms: 28x + -28x = 0 0 = 28x + -28x Combine like terms: 28x + -28x = 0 0 = 0 Solving 0 = 0 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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