Question

3x+3y=39,12x+9y=51 elimination method
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Answer 1

Explanation:

x=22

y=105/3

hope it helps

Answer 2

Answer:

3x+y=13

3x=13-y

x=13-y/3

12×13-y/3+9y= 51 3x+3/26=13

156-y+27y =153 3x+3=338

156-26y = 153 3x=335

-26y = 153-156 x=335/3

-26y = -3

y=-3/-26

y=3/26