Question

2x + Y = 7

4x - 3y + 1 = 0

By substitution method

Answer 1

the value for y is 3 & the value of x is 2

Answer 2

HOLA

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From equation 1

2x + Y = 7

Y = 7 - 2x ( Equation 3 )

Substuting 3 in 2 , we get

4x - 3 ( 7 - 2x ) + 1

4x - 21 - 6 + 1

10x - 20

$x \: = \: \frac{20}{10} = \: 2 \: ( \: by \: divison \: )$
X = 2 -- ( Equation 4 )

Substuting 3 in 4

Y = 7 - 2x

Y = 7 - 2 ( 2 )

Y = 7 - 4 = 3

Hence , Y = 3 , X = 2

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HOPE U UNDERSTAND