Question

solve it by substitution method 3x+4y = 23/7,5x- 2y= 8/7

Answer 1

Answer:

Hey Mate

Here Is Your Answer

3x+4y=23/7

3x=23/7-4y

3x=(23-28y)/7

x=(23-28y)/21

putting x in eq 2

5[(23-28y)/21]-2y=8/7

(115-140y)/21-2y=8/7

(115-140y-42y)/21=8/7

7(115-182y)=8*21

805-1274y=162

-1274y=162-805

-1274y=-643

1274y=643

y=643/1274

y=0.5(approx)

x=23-14/21

x=0.42(approx)

Hope It Helps

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