3x+2y=5 2X-3y=7 by cross multiplication method
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hope u the answer help u
Step-by-step explanation:
let the eq be a1x+b1y+c1=0,a2x+b2y+c2=0
by cross multiplication the formula
x/b1c2-b2c1=y/c1a2-c2a1= 1/a1b2-a2b1
above eq are
3x+2y-5=0 ,2x-3y-7=0
x/(2×-7)-(-3×-5)=1/(3×-3)-(2×2)
x/-14-15=1/-9-4
x/-29=1/-13
x= - 29/-13
x=29/13
y/(-5×2)-(-7×3)=1/(3×-3)-(2×2)
y/-10+21=1/-9-4
y/11=1/-13
y=-11/13
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Step-by-step explanation:
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