Х+9+х-4+х=59 Упростите

Question

Х+9+х-4+х=59 Упростите

Answer 1

X+9+x-4+x=59;
x+x+x=59+4-9;
3*x=54;
x=18;

Answer 2

3х+5=59
3х=59-5
3х=54
х=54:3
х=18