1)3(x-1,5)+2,5 = 11,5
3(x-1,5) = 11,5-2,5
3(x-1,5) = 9
x-1,5 = 3
х = 4,5
2)(x+1)+(x-2)+(x+3)+(x+4) =100
4х+6 = 100
4х = 94
х = 94/4 = 23,5
3)2/3(x+1)-1/3 = 1
2/3(x+1) = 4/3
х+1 = 2
х = 1
1)3(x-1,5)+2,5 = 11,5
3(x-1,5) = 11,5-2,5
3(x-1,5) = 9
x-1,5 = 3
х = 4,5
2)(x+1)+(x-2)+(x+3)+(x+4) =100
4х+6 = 100
4х = 94
х = 94/4 = 23,5
3)2/3(x+1)-1/3 = 1
2/3(x+1) = 4/3
х+1 = 2
х = 1