please help.
5x-2y=-10
3x+6y=66
elimination by multiplacation or addition/subtraction.

Question

please help.
5x-2y=-10
3x+6y=66
elimination by multiplacation or addition/subtraction.

anonymous · Answer

solve for y for either equations
5x-2y=-10
3x+6y=66

3x+6y =66
-3x        -3x
6y = -3x + 66
divide both side by 6
y = -(1/2)x +11

plug y into 5x-2y=-10
5x-2(-(1/2)x+11)) = -10
5x + x - 22 = -10
          + 22    +22

6x = 12
divide both side by 6
x = 2

Plug x into 3x+6y=66

3(2) + 6 y = 66
-6                -6
6y = 60
divide both side by y
y=10

(2,10)

anonymous · Answer

opps I meant 6 the last part instead of y
and check over the work in case I made a mistake somewhere

anonymous · Answer

thank you so much!  i appreciate your help.

anonymous · Answer

your welcome!

anonymous · Answer

:)