Đáp án:
a)461x+(-45)=387 b) -11x+(-53)=97 c)84x-213=(-16)
⇔ 461x-45=387 ⇔ -11x-53=97 ⇔84x=-16+213
⇔461x=387+45 ⇔-11x=97+53 ⇔84x=197
⇔467x=432 ⇔-11x=150 ⇔x= 197/84
⇔x=432/467 ⇔x=-150/11 Vậy......
Vậy.... Vậy.....
d)x–14=3x+18 e)2(x–5)–3(x–4)=-6+15(-3)
⇔ x-3x=18+14 ⇔ 2x-10-3x+12=-6-45
⇔-2x=32 ⇔2x-3x=-6-45+10-12
⇔x=-16 ⇔-x=-53
Vậy.. ⇔x=53
Vậy........