Question

3x + 4y = 31 & 5x- 3y = 13​

Answer 1

Step-by-step explanation:

3x+4y= 31------1

5x-3y= 13-------2

Multiplying 1 by 5 and 2 by 3 we get

15x+20y= 155

15x-9y= 39

subtracting thes equations we get

29y= 116

y=6

3x+4×6=31

3x+24= 31

3x=31-24=7

x=7/3

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Answer 2

Answer:

5.137

Step-by-step explanation:

step 1 multiply equ by 3

9x+12y = 93

step 2 multiply equ by 4

20x - 12y = 52

add two equations

29x = 145

x = 5.137