5x+4(x+8)=545

问题描述:

5x+4(x+8)=545

=5x+4x+32=545
=9x+32=545
9x=513
x=57你的32哪里来的去括号,4x8=32我懂了谢谢!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!望采纳!!!!谢谢