Answer
2.(x+1)=3+2x
⇔2x+2=3+2x
⇔2x-2x+2-3=0
⇔-1=0 (Vô lý)
Vậy S={ϕ}
Đáp án+Giải thích các bước giải:
2(x+1)=3+2x
⇔2x+2-3-2x=0
⇔-1=0 ( vô lí )
Vậy pt vô nghiệm
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