3x+3y=10 - 9x-9y=-30

There is no solution for this answer

solve problems by elimination

eqn1) 3x+3y=10

eqn2) - 9x-9y=-30

1st multiply eqn 1 by 3

= 9x+9y=30

now add the 2 equations

eqn1) 9x+9y=30

eqn2) - 9x-9y=-30

x term: eqn1+eqn2 = (9x-9x) = 0x

y term: eqn1+eqn2 = (9y-9y) = 0y

coefficient term: 30-30=0

new eqn = 0x + 0y = 0