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Simplifying (-70 + -3b) + b + b + b + 80 + 90 = 100 Remove parenthesis around (-70 + -3b) -70 + -3b + b + b + b + 80 + 90 = 100 Reorder the terms: -70 + 80 + 90 + -3b + b + b + b = 100 Combine like terms: -70 + 80 = 10 10 + 90 + -3b + b + b + b = 100 Combine like terms: 10 + 90 = 100 100 + -3b + b + b + b = 100 Combine like terms: -3b + b = -2b 100 + -2b + b + b = 100 Combine like terms: -2b + b = -1b 100 + -1b + b = 100 Combine like terms: -1b + b = 0 100 + 0 = 100 100 = 100 Add '-100' to each side of the equation. 100 + -100 = 100 + -100 Combine like terms: 100 + -100 = 0 0 = 100 + -100 Combine like terms: 100 + -100 = 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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