举报
aooie
是的。如果是这样的话，解答如下： (-106.04)x50+(-53.02)x(-69.3)+(-130.7)x(-53.02) =[(-53.02)x2]x50+(-53.02)x(-69.3)+(-130.7)x(-53.02) =(-53.02)x[2x50]+(-53.02)x(-69.3)+(-53.02)x(-130.7)…………乘法结合律和乘法交换律 =(-53.02)x[2x50+(-69.3)+(-130.7)]………………乘法分配律 =(-53.02)x(-100) =5302
