Question

123x18－（23x3十85Ⅹ123）用简便方法计算？

Answer 1

123x18－（备戚脊23x3十85Ⅹ123）
=123x18－23x3-85Ⅹ123
=123x(18-85)-23x3
=-123x67-23x3
=-100x67-23x67-23x3
=-6700-23x(67+3)
=-6700-23x70
=-6700-1610
=-8310
望采纳仔世，仿渗谢谢

Answer 2

123x18－(23x3十明岩启85x123)
=123x15+123x3-23x3-85x123
=(123-23)x3-123x(85-15)
=100x3.-123x70
=300-8610
=-8310。激如枣蔽

Answer 3

123x18-(23x3+85×123)=123×18 - 23x3-85X123=123x(18-85)-23x3
=-123×67-23x3
=-100×67-23x67-23x3
=-6700-23x(67+3)
=-6700-23x70
=-6700-1610
=-8310

Answer 4

123*18-（穗桥23*3+85*123）猜行猛=123*18-23*3-85*123=（带毁18-85）*123-23*3=-67*123-23*3=-67*100-67*23-23*3=-6700-70*23=-6700-1610=-8310