作业帮三道方程题及答案,三道简算脱式计算
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/09 05:54:23
三道方程题及答案,三道简算脱式计算
三道方程题及答案,三道简算脱式计算
三道方程题及答案,三道简算脱式计算
2(x+8)=44/2 2. 3x+19=4成7 3.5(x-7)=12-7
2x+16=22 3x+19=28 5x-35=5
2x=22-16 3x =9 5x =40
2x=6 x =3 x =8
x =3
1.13.75-(3.75+6.48) 2. 4.02＋5.4＋0.98
=4.02+0.98+5.4 =13.75-3.75-6.48
=10-6.48 =5+5.4
=10.4 =10.4
3.（0.75*42.7+57.3-0.573*25）/3*7972
=(0.75*42.7+57.3*1-57.3*0.25)/3*7972
=[0.75*42.7+57.3(1-0.25)]/3*7972
=[0.75*42.7+57.3*0.75]/3*7972
=[(42.7+57.3)*0.75]/3*7972
=75/3*7972
=25*7972
=199300