99x22+33x34=33x22x3+33x34=33x（22x3+34）=33x（66+34）=33x100=3300答题不易，求采纳！！！
33x3x22+33x34=100x33=3300
99×22+33×34=33×3×22+33×34=33×66+33×34=33×(66+34)=33×100=3300
