Question

Solve by substitution method and elimination method
1 ). 5x+10y=100 , 15x+30y=200
2 ) 2x+3y=6 , 2x-3y=12

Answer 1

(1) is wrong question.

(2)2x+3y=6 ×1

2x-3y=12×1

2x+3y=6

2x-3y=12

(-) (+)

6y=18

y=3

substituting the value of y,

x=1.5

Hope it's helpful to you.

Mark as a brainlist answer.