Question

43乘57加43乘43为什么等于43乘100等于4

Answer 1

43×57+43×43提取公因式43原式=43×（57+43）=43×100=4300

Answer 2

43×57+43×43
=43（57+43）
=43×100
=4300

Answer 3

43X57十43X43=43X(57十43)=4300