Question

X+y=5 and 2x-3y=4 by substitution method

Answer 1

Answer:

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Step-by-step explanation:

x=19/5

y=6/5

Answer 2

Given,

$x+y = 5 --- > (1)\\2x-3y=4 ---- > (2)$

from equation $(1)$ we get

$x =5-y$

Now, substitute the value of 'x' in equation $(2)$.

$[2*(5-y)]-3y = 4\\10-2y-3y=4\\10-5y=4\\5y=6\\y=\frac{6}{5}\\ y = 1.2$

Now, substitute the value of 'y' in equation $(1)$ we get

$x+1.2 = 5\\x = (5-1.2)\\x = 3.8$

∴ By solving the two equations by substitution method we get

$(x,y) = (3.8,1.2)$

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