Răspuns:
Explicație pas cu pas:
a)4/3x=1/9 3x=4×9 x=4×3=12
b)(3x-1)/4=1/6 6(3x-1)=4 18x-6=4 18x=10 x=5/9
c) (3x-1)/7=(5x+4)/64/5 64(3x-1)=35(5x+4)
192x-64=175x+140 17x=204 ⇒x=12
