Tìm X € Z x+5= - 10 – 8+x=12 x – 15= -2 27 – x= 33 – 11 – x = 2 – x+9=4 x+(-3)=10 x – (-5)=4 x – (-9)=4 – (-9) 4 – x=4 – (-6) 2x+15= - 11 3x+(-10)= - 11 18 – 5x= 8 – 21 – 7x= - 49 Mình cảm ơn