Bài 4 : Tìm x a ) c ) 1280 - 3(x + 123) = 230; x + - Dicamon

Question

Bài 4 : Tìm x a ) c ) 1280 - 3(x + 123) = 230; x + 17 = 9 b ) x ( 20 ) d vax >= 10; 1(5x - 15) + 75 = 52

Answer

a ) 1280 - 3(x + 123) = 230; 1280 - 3x - 369 = 230; 3x=12 80-369-230; (=)3x=681; x = 227 ( 20 ) ) x + 17 = 9; x = 9 - 17; x = - 8 d ) (5x - 15) + 75 = 52; 5x = 52 - 75 + 15; 5x = -

Answer

a) 1280 - 3(x + 123) = 230; 3(x + 123) = 1280 - 230; 3(x + 123) = 1050 @conan x + 123 = 1050/3 #dicamon x + 123 = 350; x = 350 - 123 = 227; (20) in pm1; pm2; pm4; pm5; pm10; pm204;

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