3 years ago

(2x/3)-(2x/5)=-60 and .2x+.9y=19.2

Mathematics

1 answer:

aleksandrvk [35]3 years ago

3 0

Value of x=-225

Value of y=71.33

Explanation :

2x/3-2x/5=-60 (1)

0.2x+0.9y=19.2 (2)

(2x*5-2x*3)/(3*5)=-60

(10x-6x)/15=-60

4x/15=-60

4x=15*-60

4x=-900

x=-900/4=-225

consider (2)

0.2x+0.9y=19.2

substitute the value of x in (2)

0.2*-225+0.9y=19.2

0.9y=19.2+45=64.2

y=(64.2)/(0.9)=71.33

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