Question

x+2+3x=14
x+0,5x=3
x+1/3x=12
x+3/4x=28

Answer 1

x+2+3x=14    4х = 12       х = 3
x+0,5x=3      1,5 х = 3      х = 2
x+1/3x=12    4/3 x = 12    x = 9
х+3/4x=28    7/4x = 28     x = 16

Answer 2

x+2+3x=14
4х=14-2
4х=12
х=12/4
х=3

x+0,5x=3
1,5х=3
х=3/1,5
х=2

x+1/3x=12
1 1/3x=12
х=12: $1 \frac{1}{3}$
х=$12/ \frac{4}{3} = \frac{12*3}{4}$
х=9


x+3/4x=28
1  3/4х=28
х=$28/1 \frac{3}{4} =28/\frac{7}{4}$
х=$\frac{28*4}{7}$
х=16