2. 2x +3/4 - 5x+3/6 = 3-4x/12
Giải thích
2x+34−5x+36=3−4x12
⇔3.2x+312−2.5x+312=3−4x12⇔6x+9−10x−612=3−4x12⇔3−4x12=3−4x12⇔3−4x=3−4x⇔−4x+4x=3−3⇔0.x=0⇒x∈ℝS=x|x∈ℝ
2x+34−5x+36=3−4x12
⇔3.2x+312−2.5x+312=3−4x12⇔6x+9−10x−612=3−4x12⇔3−4x12=3−4x12⇔3−4x=3−4x⇔−4x+4x=3−3⇔0.x=0⇒x∈ℝS=x|x∈ℝ