Question

5x + 2y = 8
3x + y = 5
BY ⚠️ SUBSTITUTION METHOD⚠️
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Answer 1

Answer:-

SUBSTITUTION METHOD:

$5x + 2y = 8 \: and \: 3x + y = 8$

We need to multiply 1 by equations(1)

$1(5x + 2y) = 8 \times 1 \\ 5x + 2y = 8$

We need to multiply 2 by equation(2)

$2(3x + y) = 8 \times 2 \\ 6x + 2y = 16$

We need to subtract equation(4) and (5)

$5x + 2y - 6x - 2y = 8 - 16 \\ - x = - 8 \\ \times = 8$

Adding the values we have(x=8) in equation (6x+2y=11)

$6(8) + 2y = 16 \\ 48 + 2y = 16 \\ 2y = 16 - 48 \\ = - 32 \\ y = \frac{ - 32}{2} = - 16$

Answer 2

Answer:

Hey dear,

Step-by-step explanation:

Please refer to attachment

Hope it helps!