25-10-2020
Mathematics

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Solving a word problem using a system of linear equations of the form Ax + By = C .

Solving a word problem using a system of linear equations of the form Ax By C class=

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25-10-2020

Answer:

x- large box

y small box

5x+3y=87 /×(-4)

2x+12y=105

-20x-12y=-348

2x+12y=105

-18x=-243 /÷(-18)

x=13,5

2×13,5+12y=105

12y=105-27

12y=78 /÷12

y=6,5

large box=13.5kg

small box=6.5kg

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