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Simplifying 2a + 7 = 2a + f Reorder the terms: 7 + 2a = 2a + f Add '-2a' to each side of the equation. 7 + 2a + -2a = 2a + -2a + f Combine like terms: 2a + -2a = 0 7 + 0 = 2a + -2a + f 7 = 2a + -2a + f Combine like terms: 2a + -2a = 0 7 = 0 + f 7 = f Solving 7 = f Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Add '-1f' to each side of the equation. 7 + -1f = f + -1f Combine like terms: f + -1f = 0 7 + -1f = 0 Add '-7' to each side of the equation. 7 + -7 + -1f = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1f = 0 + -7 -1f = 0 + -7 Combine like terms: 0 + -7 = -7 -1f = -7 Divide each side by '-1'. f = 7 Simplifying f = 7
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