7x+41x=192
48x=192
x=192:48
x=4
40x-4x=540
36x=540
x=540:36
X=15
(9X+7X)*6=288
16X=288:6
16X=48
X=48:16
x=3
7x+41x=192
48x=192
x=192:48
x=4
40x-4x=540
36x=540
x=540:36
X=15
(9X+7X)*6=288
16X=288:6
16X=48
X=48:16
x=3
48#=192 (9#+7#)×6=288
#=192÷48 54#+42#=288
#=4 96#=288
#=288÷96 #=3