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Simplifying -3r + 7 = r + -4(2 + r) Reorder the terms: 7 + -3r = r + -4(2 + r) 7 + -3r = r + (2 * -4 + r * -4) 7 + -3r = r + (-8 + -4r) Reorder the terms: 7 + -3r = -8 + r + -4r Combine like terms: r + -4r = -3r 7 + -3r = -8 + -3r Add '3r' to each side of the equation. 7 + -3r + 3r = -8 + -3r + 3r Combine like terms: -3r + 3r = 0 7 + 0 = -8 + -3r + 3r 7 = -8 + -3r + 3r Combine like terms: -3r + 3r = 0 7 = -8 + 0 7 = -8 Solving 7 = -8 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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