Q. 5 C4.3( 6 Votes )

# Let us solve the following simultaneous equations in two variables by the method of substitution.

Answer :

Given … (1)

And … (2)

Expressing x of equation (1) in terms of y,

… (3)

Substituting (3) in (2),

⇒ 12 + 5y = 18

⇒ 5y = 18 – 12

⇒ 5y = 6

∴ y =

Substituting y value in (3),

∴ By solving, we get and .

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