计算:7x-{-3x+[-2x-(8x-1)]-4}

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/16 12:41:49
计算:7x-{-3x+[-2x-(8x-1)]-4}
x){nue^~O1~n ,D~^ ޹6IEh/~tٚWFWhkUZThj¥4R0 ]M$qC1\@6 @L<;lt )~

计算:7x-{-3x+[-2x-(8x-1)]-4}
计算:7x-{-3x+[-2x-(8x-1)]-4}

计算:7x-{-3x+[-2x-(8x-1)]-4}
7x-{-3x+[-2x-(8x-1)]-4}
=7x-[-3x+(-2x-8x+1)-4]
=7x-(-3x-2x-8x+1-4)
=7x-(-13x-3)
=7x+13x+3
=20x+3

20x+3