-5,7:(-19)-0,8*(-4)+2,7:0,3+=12,5 помогите пожалуйста с решением!:(
Ответы
Выражение: -5.7:(-19)-0.8*(-4)+2.7:0.3=12.5
Ответ: 0
Решаем по действиям:
1. 5.7:(-19)=-5.7/19
2. 5.7/19=0.3
5.70|1_9_ _
5_7_ |0.3
0
3. -(-0.3)=0.3
4. 0.8*(-4)=-0.8*4
5. 0.8*4=3.2
X0.8
_ _4_ _
3.2
6. 0.3-(-3.2)=0.3+3.2
7. 0.3+3.2=3.5
+0.3
_3_._2_
3.5
8. 2.7:0.3=9
2.70|0_._3_ _
2_7_ |9
0
9. 3.5+9=12.5
+3.5
_9_._0_
12.5
10. 12.5-12.5=0
-12.5
_1_2_._5_
00.0
Решаем по шагам:
1. -(-5.7/19)-0.8*(-4)+2.7:0.3-12.5=0
1.1. 5.7:(-19)=-5.7/19
2. -(-0.3)-0.8*(-4)+2.7:0.3-12.5=0
2.1. 5.7/19=0.3
5.70|1_9_ _
5_7_ |0.3
0
3. 0.3-0.8*(-4)+2.7:0.3-12.5=0
3.1. -(-0.3)=0.3
4. 0.3-(-0.8*4)+2.7:0.3-12.5=0
4.1. 0.8*(-4)=-0.8*4
5. 0.3-(-3.2)+2.7:0.3-12.5=0
5.1. 0.8*4=3.2
X0.8
_ _4_ _
3.2
6. 0.3+3.2+2.7:0.3-12.5=0
6.1. 0.3-(-3.2)=0.3+3.2
7. 3.5+2.7:0.3-12.5=0
7.1. 0.3+3.2=3.5
+0.3
_3_._2_
3.5
8. 3.5+9-12.5=0
8.1. 2.7:0.3=9
2.70|0_._3_ _
2_7_ |9
0
9. 12.5-12.5=0
9.1. 3.5+9=12.5
+3.5
_9_._0_
12.5
10. 0=0
10.1. 12.5-12.5=0
-12.5
_1_2_._5_
00.0