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Simplifying 0.4(7x + 14) = 2.8(x + 2) Reorder the terms: 0.4(14 + 7x) = 2.8(x + 2) (14 * 0.4 + 7x * 0.4) = 2.8(x + 2) (5.6 + 2.8x) = 2.8(x + 2) Reorder the terms: 5.6 + 2.8x = 2.8(2 + x) 5.6 + 2.8x = (2 * 2.8 + x * 2.8) 5.6 + 2.8x = (5.6 + 2.8x) Add '-5.6' to each side of the equation. 5.6 + -5.6 + 2.8x = 5.6 + -5.6 + 2.8x Combine like terms: 5.6 + -5.6 = 0.0 0.0 + 2.8x = 5.6 + -5.6 + 2.8x 2.8x = 5.6 + -5.6 + 2.8x Combine like terms: 5.6 + -5.6 = 0.0 2.8x = 0.0 + 2.8x 2.8x = 2.8x Add '-2.8x' to each side of the equation. 2.8x + -2.8x = 2.8x + -2.8x Combine like terms: 2.8x + -2.8x = 0.0 0.0 = 2.8x + -2.8x Combine like terms: 2.8x + -2.8x = 0.0 0.0 = 0.0 Solving 0.0 = 0.0 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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