Question

5x_4y=18,10x_10y=20 by elimination method

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Answer 1

Answer:

x=10 ; y=8

Step-by-step explanation:

Given:

5x-4y=18__(1)

10x-10y=20__(2)

eliminating x

(1)×10= 50x-40y=180

(2)×5= 50x-50y=100 (-)

= 10y=80

y=80/10

then y=8

substituting y=8 in 1 equation

5x-4y=18__(1)

5x-4(8)=18

5x-32=18

5x=18+32

x=50/5

x=10

Answer 2

Elimination method is a way of solving equations in two variables by completely eliminating one variable keeping the other.