Question

solve this by the addition method
5x+4y=12
7x-6y=40

Answer 1

x = 4

y = -2

Answer 2

Is that the addition method?:-)

Answer 3

Just apply what I taught you in the last question, lol. Try to multiply the first equation and the second equation by two different values so that when added they result in 0x.

Answer 4

Think you can manage that, Eva147?

Answer 5

Good for u.

Answer 6

Maybe you need another example .... Multiply the first equation through by 7 and the second equation through by -5

35x+28y=84
-35x+30y=-200
++++++++++++ Add
0x+58y=-116
y=-2

Substitute that into either equation to get the value of x and check with the other equation to make sure it works out.