hii guys .need a hardly helps u .pls help it u know
pls do 10 ,11,12 question
by elimination methis
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i m much buzy to answer the quesion 11
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HERE IS THE ANSWER
!!!!!!! MAKE IT BRAINLIEST !!!!!!!!!!
10 . 2x+y = 23......(i)4x−y = 19.....
(ii)Adding both (i) and (ii)
we get
;2x+y+4x−y = 23+19⇒
6x = 42⇒
x = 426 = 7
Putting the value of x in (i)
we get
;2×7+y = 23
⇒14+y = 23
⇒y = 23−14 = 9
So the value of x - 3y is given by
;x−3y=7−3×9 = 7−27 = −20
And the value of 5y - 2x is given by
;5y−2x = 5×9−2×7 = 45−14
11.
!!!!!!! MAKE IT BRAINLIEST !!!!!!!!!!
10 . 2x+y = 23......(i)4x−y = 19.....
(ii)Adding both (i) and (ii)
we get
;2x+y+4x−y = 23+19⇒
6x = 42⇒
x = 426 = 7
Putting the value of x in (i)
we get
;2×7+y = 23
⇒14+y = 23
⇒y = 23−14 = 9
So the value of x - 3y is given by
;x−3y=7−3×9 = 7−27 = −20
And the value of 5y - 2x is given by
;5y−2x = 5×9−2×7 = 45−14
11.
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