Question

$0.3x + 0.4y = 25 \: and \: 0.5x - 0.3y = 0.3$
please give me answers of this question with cross multiplication. ​

Answer 1

Answer:

0.3x + 0.4y = 25 = 3x + 4y = 250 - 0

0.5x - 0.3y = 0.3 = 5x - 3y - 3 = 0

Step-by-step explanation:

Q. 0.3x + 0.4y = 25. Ans :-

0.3x + 0.4y = 25

Move the constant to the left hand side and change its sign.

= 0.3x + 0.4y - 25 = 0

Multiply both sides of the equation by 10.

= 3x + 4y - 250 = 0

Final Answer :- 3x + 4y - 250 = 0

Q. 0.5x - 0.3y = 0.3. Ans :-

0.5x - 0.3y = 0.3

Move the constant to the left hand side and change its sign.

= 0.5x - 0.3y - 0.3 = 0

Multiply both sides of the equation by 10.

= 5x - 3y - 3 = 0

Final Answer :- 5x - 3y - 3 = 0