x/6+y/15=4
x/3-y/12=19/4 حد
EQUATING COEFFICIENTS
as by a suitable number or numbers
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Step-by-step explanation:
15x+6y= 36
12x- 3y =171
15x+6y =360
24x+-6y =342
9x = 18
x= 2
y=55
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