Question

3. Solve the following pairs of linear equations
by the method of substitution :


x/3 +y/4 =5 .x/2+y/3=7
​

Answer 1

Answer:

Here's the solution

Step-by-step explanation:

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Answer 2

Answer:

x=6, y=12

Step-by-step explanation:

4x+3y=5×12

4x+3y=60------------(1)

3x+2y=7×6

3x+2y=42------------(2)

4x=60-3y

x=60-3y/4

put this in eq (2)

3(60-3y/4)+2y=42

180-9y+8y=42×4

180-168=y

y=12

x=60-3(12)/4

x=60-36/4

x=24/4

x=6

x=6, y=12