Question

Solve the following pair of linear equations by the substitution method
$8x + 5y = 9 \\ 3x + 2y = 4$
please solve urgently please​

Answer 1

Step-by-step explanation:

8x=9-5y

x=(9-5y)/8

put this value in second equation,

to find answer...

Answer 2

$\bf\underline{\underline{\green{SOLUTION:-}}}$

Question

Solve equation by substitution Method

1) 8x+5y=9

2) 3x+2y=4

Answer

• x= 34/8
• y=-5

Given

$\bf\underline{\underline{\orange{Substitution\:Method:-}}}$

• 8x+5y=9___________(1)
• 3x+2y=4___________(2)

• 8x+5y=9

☞ 8x=9-5y

☞ x= 9-5y /8 __________(3)

Putting value of x in eq 2

3x+2y=4

☞ 3×(9-5y /8) +2y =4

☞ 27-15y /8+2y=4

☞ 27-15y+16y /8 =4

☞ 27-15y+16y=32

☞ 27-y=32

☞ -y=32-27

☞y = -5

Putting y= -5 in eq 3

x= 9-5y /8

☞ 9-5×(-5) /8

☞ 9+25 /8

☞ 34/8

$\bf\underline{\underline{\green{HENCE:-}}}$

• x= 34/8
• y= -5

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