9+4x=143
4x=143-9
4x=134
x=134/4
х=33,5
X:12=36
X=36*12
X=432
5x + 4x – 17 = 64
5x + 4x = 64 + 17
9x = 81
x = 9
9+4x=143
4x=143-9
4x=134
x=134/4
х=33,5
X:12=36
X=36*12
X=432
5x + 4x – 17 = 64
5x + 4x = 64 + 17
9x = 81
x = 9