Respuesta :
4x - 3y = 22
2x + 8y = 30
Multiply the second equation by - 2
4x - 3y = 22
-2(2x + 8y = 30)
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4x - 3y = 22
- 4x - 16y = - 60
----------------------------
- 19y = - 38
Divide both sides by - 19
y = 2
Plug 2 into either equation and solve for x.
2x + 8(2) = 30
2x + 16 = 30
subtract 16 from both sides
2x = 14
divide both sides by 2
x = 7
(7, 2)
2x + 8y = 30
Multiply the second equation by - 2
4x - 3y = 22
-2(2x + 8y = 30)
-----------------------
4x - 3y = 22
- 4x - 16y = - 60
----------------------------
- 19y = - 38
Divide both sides by - 19
y = 2
Plug 2 into either equation and solve for x.
2x + 8(2) = 30
2x + 16 = 30
subtract 16 from both sides
2x = 14
divide both sides by 2
x = 7
(7, 2)