October 2023 1 10 Report
146.° Доведіть тотожність: 1) -0,2 (469) + 1,4b = 0,6b + 1,8; 2) (5a - 3b) - (4 + 5a - 3b) = −4; 3) 5 (0,4x 0,3)+ (0,8-0,6x) = 1,4x - 0,7; 4) (3y-27)-2(y-1,5) - = 67.

Помогите пожалуйста, спам, неправильный ответ - бан.

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