1.8x+2.6（36-x）+27.6=100 帮忙写出过程谢谢 很急

1.8x+2.6（36-x）+27.6=100 帮忙写出过程谢谢 很急

1.8x+93.6-2.6x+27.6=100
2.6x-0.8x=93.6+27.6-100
0.8x=21.2
x=21.2÷0.8
x=26.5