4x+6y=15 and 3x-4y=7 solve using cross multiplication
Answers
Answered by
26
4x+6y=15 12x+18y=45
3x-4y=7 12x-16y=28
_________ _________
x=3, 34y=17
y=1/2 y=1/2
your answer now put
value of y
then value of
x will be 3
3x-4y=7 12x-16y=28
_________ _________
x=3, 34y=17
y=1/2 y=1/2
your answer now put
value of y
then value of
x will be 3
ansh689172:
how
Answered by
28
4x+6y=15
3x-4y=7
X Y -1
6 15 4 6
-4 7 3 -4
==> X/(42+60) = Y/(45-28) = -1/(-16-18)
==> X/102 = Y/ 17 = -1/-34
==> X/102 = -1/-34 AND Y/17 = -1/-34
==> X = -102/-34 AND Y = -17/-34
==> X = 3 AND Y = 1/2
I HOPE ITS HELPFUL
Similar questions