Question

А) 3x =4-X;
Б) 4x =5-X .

Answer 1

3x+x=4

4x=4

x=4:4

x=1

4x+x=5

5x=5

x=5:5

x=1

Answer 2

А)3х=4-х
3х+х=4
4х=4
х=4/4
х=1
Б)4х=5-х
4х+х=5
5х=5
х=5/5
Х=1