簡易方程式

1) ( x + 8 ) × 5 = 40
5x+40=40
5x=0
x=0

2)3( t - 9 ) = 15
3t-27=15
3t=42
t=14

3)8分之b - 2分之1 = 2分之1
b/8-1/2=1/2
b/8=1
b=8

4.) 4分3 t = 4分之1 + 10
3t/4=1/4+10
3t/4=1/4+40/10
3t/4=41/10
3t=164/10
t=5.47

1.) ( x + 8 ) × 5 = 40
5x+5(8)=40
5x+40=40
5x+40-40=40-40
5x=0
x=0

2.) 3( t - 9 ) = 15
3t-3(9)=15
3t-27=15
3t-27+27=15+27
3t=42
3t/3=42/3
t=14

3.) 8分之b - 2分之1 = 2分之1
b/8-1/2+1/2=1/2+1/2
b/8=1
b/8×8 = 1×8
b=8

4.) 4分3 t = 4分之1 + 10
3t/4=1/4+40/4
3t/4=41/4
3t/4×4=41/4×4
3t=41
t=3分之41

1.) ( x + 8 ) × 5 = 40
5x+40=40
x=0

2.) 3( t - 9 ) = 15
3t-27=15
3t=42
t=14

3.) b/8 - 1/2 = 1/2
b/8=1
b=8

4.) 3t/4 = 1/4 + 10
3t/4=41/10
3t=84/40
t=7/20

MAYBE SOME IS WRONG*

1. X = 0
2. t = 14
3. b = 8
4. t = 41/3

1.) x=0
2.)t=14
3.)b=8
4.)t= 41分之3