被减数减去后面两个数的和,等于被减数连续减去后面的数17.25-(7.25+2.36)=17.25-7.25-2.36=10-2.36=7.64
7.64×(2.9-1.4)+1.5×2.36的简便方法如下:7.64×(2.9-1.4)+1.5×2.36=7.64×1.5+1.5×2.36=1.5×(7.64+2.36)=1.5×10=15
7.64×(2.9-1.4)+1.5×2.36=7.64×1.5+1.5×2.36=1.5×(7.64+2.36)=1.5×10=15