x:8.1=5解方程 解方程. 5.6+x=10
解方程. 5.6+x=10
解方程. 5.6+x=10
(1)5.6+x=10
5.6+x-5.6=10-5.6
x=4.4;
(2)5x=1.3
5x÷5=1.3÷5
x=0.26;
(3)x÷0.08=2.5
x÷0.08×0.08=2.5×0.08
x=0.2;
(4)x-0.42=6.9
x-0.42+0.42=6.9+0.42
x=7.32.
解方程.5.6+x=10 5x=1.3 .
(1)5.6+x=10
5.6+x-5.6=10-5.6
x=4.4
(2)5x=1.3
5x÷5=1.3÷5
x=0.26
(3)x÷0.08=25
x÷0.08×0.08=25×0.08
x=2
(4)12x-3=10x+8
12x-3-10x+3=10x+8-10x+3
2x=11
2x÷2=11÷2
x=5.5
解方程. 5.6+x=10 4x-5.2=6.3 5x÷0.08=25&nb.
①5.6+x=10
5.6-5.6+x=10-5.6
x=4.4
②4x-5.2=6.3
4x-5.2+5.2=6.3+5.2
4x=11.5
4x÷4=11.5÷4
x=2.875
③5x÷0.08=25
5x÷0.08×0.08=25×0.08
5x=2
5x÷5=2÷5
x=0.4
④5x=6.4-3x
5x+3x=6.4-3x+3x
8x=6.4
x=0.8
6(x+2.8)=40.8 9x-0.4*2.5=9.8 (5.6+x)*4=56 解方程
6(x+2.8)=40.8 9x-0.4*2.5=9.8 (5.6+x)*4=56
解:6x+16.8=40.8 解: 9x-1=9. 解:5.6*4+4x=56
6x=24 9x=10.8 4x=33.6
x=4 x=1.2 x=8.4
5.6-x 4.4=10解方程
5.6x-4.4=10
5.6x=10+4.4
5.6x=14.4
x=8.8

解方程 5.6:x=10分之7
十分之七就是0.7 x=5.6/0.7=8
解方程.5.6+2x=10 &nbs.
(1)5.6+2x=10
5.6+2x-5.6=10-5.6
2x=4.4
x=2.2
(2)6-5x=1.3
6-5x+5x=1.3+5x
1.3+5x=6
1.3+5x-1.3=6-1.3
5x=4.7
x=0.94
(3)(x-1)÷0.08=25
(x-1)÷0.08×0.08=25×0.08
x-1=2
x-1+1=2+1
x=3
(4)12÷(x+1)=3
12÷(x+1)×(x+1)=3(x+1)
3x+3=12
3x+3-3=12-3
3x=9
3x÷3=9÷3
x=3
解方程.5.6+χ=10
(1)5.6+x=105.6+x-5.6=10-5.6
x=4.4;(2)5x=1.3
5x÷5=1.3÷5
x=0.26;
(3)x÷0.08=2.5
x÷0.08×0.08=2.5×0.08
x=0.2;
(4)x-0.42=6.9
x-0.42+0.42=6.9+0.42
x=7.32.