What is the sum of the solutions of 2x [×-1]-4=-2
2 answers:
Lets get stated :)
2x ( -1 ) - 4 = - 2
- 2x - 4 = - 2
Bring 4 to the right-hand side { You do addition to the opposite }
- 2x = - 2 + 4
- 2x = 2
Take - 2 to the other side in order to isolate x { Do division when you see multiplication }
x = -1
Quick check:
2 ( - 1 ) ( - 1 ) - 4 = - 2
2 - 4 = - 2
- 2 = - 2
So it is the correct value
2x ( -1 ) - 4 = - 2
- 2x - 4 = - 2
Bring 4 to the right-hand side { You do addition to the opposite }
- 2x = - 2 + 4
- 2x = 2
Take - 2 to the other side in order to isolate x { Do division when you see multiplication }
x = -1
Quick check:
2 ( - 1 ) ( - 1 ) - 4 = - 2
2 - 4 = - 2
- 2 = - 2
So it is the correct value
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Answer:
Step-by-step explanation:
y = x .....(1)
.... (2)
By solving equation (1) and equation (2)
or
x = 0, x = 1
y = 0, y = 1
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