Francine solves the system of equations using the linear combination method. 4x+3y=−1 3x−5y=4 which steps would allow her to eliminate the x terms in the system of equations? (a) multiply 4x+3y=−1 by 4. multiply 3x−5y=4 by 3. add the resulting equations together. (b) multiply 4x+3y=−1 by 3. multiply 3x−5y=4 by −4 . add the resulting equations together. (c) multiply 4x+3y=−1 by 5. multiply 3x−5y=4 by 3. add the resulting equations together. (d) multiply 4x+3y=−1 by −4 . multiply 3x−5y=4 by 3. add the resulting equations together.

Answer

(B) Multiply 4x+3y=−1 by 3. Multiply 3x−5y=4 by −4 . Add the resulting equations together.

Explanation

There are 2 ways of solving simultaneous equation, substitution and elimination.

In elimination, we either eliminate x or y. For this question, we are eliminating x.

(4x+3y=−1  )× 3

(3x−5y=4 ) × -4

Then add the results as follows.

    12x + 9y = -3

+  -12x + 20y = -16

       0x + 29y = -19

29y = -19

y = -19/29

the answer would be d

straight away you can eliminate a and c because not all books contain a scientific skill because some may be fiction. c is also wrong because it saids that the only way children can learn is through books which is incorrect.

b is also wrong because reading can be a scientific skill but not always, therefore it is wrong which leaves you with d, the correct answer since it said that it can children learn.

hope this ! : 3

just get this app called photo math it should be able to do those