Question

Question 7. If 3x + 3y = 12 and
3x - 2y = 5 then​

Answer 1

Answer:

x=23;y=-3/5

Step-by-step explanation:

=3 x + 3 y = 12

=3x=12-3y

=x=12-3y/3

=3x-2y=5

=12-3y/3-2y=5

=12-3y-2y=15

=12-5y=15

=-5y=15-12

=-5y=3

=y=-3/5

3x+3y=12

=3x+3(-3/5)=12

=3x-9/5=12

=3x=12+9/5

=x=69/3

=x=23