Question

do cross multiplication of 3x+4y=10 , 2x-2y=2
for (class 10)​

Answer 1

Answer:

Answer:

x=2

y=1

Step-by-step explanation:

3x+4y=10

2x-2y=2

4 10 3 4

-2 2 2 -2

cross multiply it

x/8-(-20) = y/20-6=-1/-6-8

= x/28= y/14 = -1/-14

from (i) and (ii)

x/28=-1/-14

-14x=-28

x=2

from (ii)and (iii)

y/14=-1/-14

-14y =-14

y=1

I hope it helps....

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