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(3x-4)asupra lu 6 =7asupra lu 8


Răspuns :

(3x-4)          7
--------- = ----------
    6             8

8×(3x-4)=6×7
24x-32=42
24x=42+32
24x=74
x=74:24
x=3,08(3)


(3x - 4)/6 = 7/8 
8 (3x -4 ) = 6 x 7 
24x - 32 = 42 
24x = 42 + 32 
24x = 74 
x = 74/24 
x = 37/12