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9) let the ten's digit be x
& one's Digit be y.
10x+y+10y+x=132.
11x+11y=132
x+y=12.......i
x-y=2.....ii
add i &ii
x+y+x-y=12+2
2x=14
x=7
put value of x in equation ii
x-y=2
7-y=2
-y=2-7
-y=-5
y=5
the no. is 75
@Altaf
& one's Digit be y.
10x+y+10y+x=132.
11x+11y=132
x+y=12.......i
x-y=2.....ii
add i &ii
x+y+x-y=12+2
2x=14
x=7
put value of x in equation ii
x-y=2
7-y=2
-y=2-7
-y=-5
y=5
the no. is 75
@Altaf
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ALTAF11:
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Q3 m=-1
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