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Simplifying 1.4(2x + -1) + 1.4 = 0.7(4x + -10) + 7 Reorder the terms: 1.4(-1 + 2x) + 1.4 = 0.7(4x + -10) + 7 (-1 * 1.4 + 2x * 1.4) + 1.4 = 0.7(4x + -10) + 7 (-1.4 + 2.8x) + 1.4 = 0.7(4x + -10) + 7 Reorder the terms: -1.4 + 1.4 + 2.8x = 0.7(4x + -10) + 7 Combine like terms: -1.4 + 1.4 = 0.0 0.0 + 2.8x = 0.7(4x + -10) + 7 2.8x = 0.7(4x + -10) + 7 Reorder the terms: 2.8x = 0.7(-10 + 4x) + 7 2.8x = (-10 * 0.7 + 4x * 0.7) + 7 2.8x = (-7 + 2.8x) + 7 Reorder the terms: 2.8x = -7 + 7 + 2.8x Combine like terms: -7 + 7 = 0 2.8x = 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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