2/3x+1=2 3/10x-4/5=7/10

2/3x+1=2
2/3x=1
x=1X3/2
x=3/2


3/10x-4/5=7/10
3/10x-8/10=7/10
3x-8=7
3x+15
x=15/3
x=5

Bonjour, 

2/3x + 1 = 2
2/3x = 2 -1
2/3x = 1
x = 3/2

3/10x - 4/5 = 7/10
3/10x = 7/10 + 4/5
3/10x = 7/10 + 8/10 
3/10x = 15/10
x = 15/10 X 10/3 
x = 150/30
x = 5

Bonne continuation! :)