Упростите выражение:
а)6b+6+13b-11
б)b-23+13b-8
в)-13b-8+(b+8)
г)(12b-8)-(9b-9)
а)6b+6+13b-11
б)b-23+13b-8
в)-13b-8+(b+8)
г)(12b-8)-(9b-9)
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Verified answer
А) 6b + 6 + 13b - 11 = 19b - 5б) b - 23 + 13b - 8 = 14b - 31
в) - 13b - 8 + (b + 8) = - 13b - 8 + b + 8 = - 12b
г) (12b - 8) - (9b - 9) = 12b - 8 - 9b + 9 = 3b + 1