Question

find the value of X 2x - 5y = -8​

Answer 1

Step-by-step explanation:

$2x - 5y = - 8 \\ 2x = - 8 + 5y \\ x = \frac{ - 8 + 5y}{2}$

Answer 2

Answer:

2x + 5y = 12

x + y = 3

y = mx + c

___________ [GIVEN]

• We have to find the value of m

____________________________

\implies 2x + 5y = 12 ______ (eq 1)

\implies x + y = 3

\implies x = 3 - y _______ (eq 2)

• Put value of x in (eq 1)

\implies 2(3 - y) + 5y = 12

\implies 6 - 2y + 5y = 12

\implies 3y = 6

\implies \boxed{y \:=\: 2}

• Put value of y in (eq 2)

\implies x = 3 - 2

\implies \boxed{x\:=\:1}

______________________________

y = mx + 5

\implies 2 = m (1) + 5

\implies 2 = m + 5

\implies m = - 3

_____________________________

\huge{\bold{m\:=\:-3}}

_____________ [ANSWER]

Step-by-step explanation:

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