如题所述
=1/15×15×17+2/17×17×15=17+30=47
刚错了
这道题能简算么
=15.6÷4/9+1.1×4×2.25=15.6÷4/9+1.1×9=15.6÷4/9+9.9=35.1+9.9=45
15.6÷4/9 +22/5x2.25=15.6÷4x9 +22x2.25÷5=4.4x9+22x4.5=4.4x10-4.4 +20x4.5+2x4.5=44+90+9-4.4=134+4.6=138.6
要答案还是要公式?(15.6*9/4)+(22*2.25/5) 140.4/4+49.5/5 35.1+9.9 45
帮忙采纳下哈