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vovikov84 [41]
3 years ago
11

2x + 3y = 6

Mathematics
2 answers:
QveST [7]3 years ago
8 0

Answer:

Option c :11y = 22

Step-by-step explanation:


Given :

2x+3y = 6 --(a)


5x+2y = 4  ---(b)


Solution :

First multiply equation (a) by 5 then it become :


10x+15y = 30 --(c)


Then multiply equation (b) by 2 then it becomes :


10x+4y = 8 --(d)


Now subtract (d) from (c)


⇒10x+15y -30 -(10x+4y -8)=0


⇒10x+15y -30 -10x-4y +8=0


⇒11y-22=0


⇒11y=22


Thus , option C is right.



Natalka [10]3 years ago
3 0
*eq1 by 2 and eq2 by -3
4x+6y=12
-15x-6y=-12
-11x=0
x=0
so
3y=6
y=2
so option 3 is correct
11y=22


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