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vanitycarraway2000
18.03.2021 •
Mathematics
Find the solution of the system of equations.
2x + 3y = -2
4x + 9y = 14
Solved
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Ответ:
Y= 6
Ответ:
x = -10
y = 6
Step-by-step explanation:
here's the solution : -
=》2x + 3y = -2
=》4x + 9y = 14
multiplying the equation 1 by 2
=》2( 2x + 3x = -2 )
=》4x + 6y = -4
now, subtracting the equation 1 from equation 2
=》4x + 9y - 4x - 6y = 14 - (-4)
=》3y = 18
=》y = 18 ÷ 3
=》y = 6
now, plugging the value of y as 6 in equation 2, we get : -
=》4x + 9y = 14
=》4x + (9 × 6) = 14
=》4x + 54 = 14
=》4x = 14 - 54
=》x = -40 ÷ 4
=》x = -10
Ответ:
________
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