1.

Solve the following simultaneous equations by elimination method. 5x-6x+30=0;5x+4y-20=0

Answer»

Answer:

(1)-31 (2)- 1

Step-by-step explanation:

=>-1x=30

=>x=30+1

=>x =31

(2)=> 5X+4y=20

=> 5x = 20÷4y

=> 5x= 5y

=> xy=1

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