solve the following simultaneous equation in full method
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Answer:
( D ) 7 is the correct answer
( See explanation )
Step-by-step explanation:
3x - 2y = 6 ( 1 )
2x + y = 11 ( 2 )
Comparing equation ( 1 ) with a₁x + b₁y = c₁ we get ,
a₁ = 3 b₁ = -2 c₁ = 6
Comparing equation ( 2 ) with a₂x + b₂y = c₂ we get ,
a₂ = 2 b₂ = 1 c₂ = 11
Now ,
D = [a₁ b₁
a₂ b₂]
= [3 -2
2 1] (Cross multiply 3 with 1 and 2 with -2 and b₁a₂ from a₁b₂)
= ( 3 x 1 ) - ( 2 x -2 )
= 3 - ( -4 )
= 3 + 4
= 7
The value of D is 7
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Answered by
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Answer:
( D ) 7 is the correct answer
Step-by-step explanation:
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