2x+(x+15)*4=126
问题描述:
2x+(x+15)*4=126
答
2x+(x+15)*4=126
2x+4x+60=126
6x=66
x=11
2x+(x+15)*4=126
2x+(x+15)*4=126
2x+4x+60=126
6x=66
x=11