问题
解答题
10-10.5÷[5.2×14.6-（9.2×5.2+5.4×3.7-4.6×1.5）]+（1.7+1.9）÷0.225×70．
答案
10-10.5÷[5.2×14.6-（9.2×5.2+5.4×3.7-4.6×1.5）]+（1.7+1.9）÷0.225×70
=10-10.5÷[5.2×14.6-9.2×5.2-5.4×3.7+4.6×1.5]+1120，
=10-10.5÷[（14.6-9.2）×5.2-5.4×3.7+4.6×1.5]+1120，
=10-10.5÷[5.4×5.2-5.4×3.7+4.6×1.5]+1120，
=10-10.5÷[（5.2-3.7）×5.4+4.6×1.5]+1120，
=10-10.5÷[1.5×5.4+4.6×1.5]+1120，
=10-10.5÷[（5.4+4.6）×1.5]+1120，
=10-10.5÷[10×1.5]+1120，
=10-10.5÷15+1120，
=10-0.7+1120，
=1129.3．