Question

find the values of the (x-y),if 5x-2y=4 ; x +8y =26​

Answer 1

Answer:

Step-by-step explanation:

\begin{gathered}5x - 2y = 4.........(1) \\ x + 8y = 26.........(2) \\ putting \: equation \: 1 \: and \: 2 \\ 5x - 2y = 4 \\ 5x + 40y = 130 \\ - \: \: \: \: - \: \: \: \: \: - \\ = = = = = = = = = \\ - 42y = - 126 \\ y = \frac{126}{42} = > 3 \\ now \: putting \: the \: value \: of \: y \: in \: 1 \\ 5x - 2y = 4 \\ 5x - 2 \times 3 = 4 \\ 5x = 4 + 6 \\ 5x = 10 \\ x = 2\end{gathered}

5x−2y=4.........(1)

x+8y=26.........(2)

puttingequation1and2

5x−2y=4

5x+40y=130

−−−

=========

−42y=−126

y=

42

126

=>3

nowputtingthevalueofyin1

5x−2y=4

5x−2×3=4

5x=4+6

5x=10

x=2

hence

the value of X+Y=2+3

=5

Answer 2

Step-by-step explanation:

5x−2y=4.........(1)

x+8y=26.........(2)

puttingequation1and2

5x−2y=4

5x+40y=130

−−−

=========

−42y=−126

y=

42

126

=>3

nowputtingthevalueofyin1

5x−2y=4

5x−2×3=4

5x=4+6

5x=10

x=2