3(x+2/3)-(x-1)=7急
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3(x+2/3)-(x-1)=7急3(x+2/3)-(x-1)=7急3(x+2/3)-(x-1)=7急3x+2-x+1=72x=4x=2解3(x+2/3)-(x-1)=73x+2-x+1=72x=4x
3(x+2/3)-(x-1)=7急
3(x+2/3)-(x-1)=7
急
3(x+2/3)-(x-1)=7急
3x+2-x+1=7
2x=4
x=2
解
3(x+2/3)-(x-1)=7
3x+2-x+1=7
2x=4
x=2