Question

Solve:3x + 2y = 7 ; 5x –7y = 9
Pls fast

Answer 1

Answer:

x=1; y=2

Step-by-step explanation:

Multiplying

5×3x+5×2y=5×7

15x+10y=35

3×5x-3×7y=3×9

15x-21y=27

Substracting

15x+10y=35

-15x-21y=27

31y=62

y=62/31

y=2

Substituting y=2

3x + 2y = 7

3x+2×2=7

3x+4=7

3x=7-4

3x=3

x=3/3

x=1

Proving x=1;y=2

3x + 2y = 7 ; 5x –7y = 9

3×1+2×2=7

3+4=7

Hence proved.

Hope it helps you ❤️