4(2X一9)+3(X一15)=7(X一1)一2
问题描述:
4(2X一9)+3(X一15)=7(X一1)一2
答
8x-36+3x-45=7x-7-2
4x=72
x=18
4(2X一9)+3(X一15)=7(X一1)一2
8x-36+3x-45=7x-7-2
4x=72
x=18