Answer:
x=3, y=4. (3, 4).
Step-by-step explanation:
y=-x+7
y=x+1
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-x+7=x+1
-x-x+7=1
-2x=1-7
-2x=-6
2x=6
x=6/2
x=3
y=3+1=4
Answer:
2
Step-by-step explanation:
5 and 7 are the coefficients if you need them
Answer: x3+2x+3
Step-by-step explanation:
Answer:
The answer to your question is below
Step-by-step explanation:
1.- y = 2x - 64
x - 2y = 14
Substitution
x - 2(2x - 64) = 14
Simplification
x - 4x + 128 = 14
x - 4x = 14 - 128
-3x = - 114
x = 114/3
x = 38
y = 2(38) - 64
y = 76 - 64
y = 12
Solution (38, 12)
2.- y = x - 6
3x + 2y = 8
Substitution
3x + 2(x - 6) = 8
Simplification
3x + 2x - 12 = 8
5x = 8 + 12
5x = 20
x = 20 / 5
x = 4
y = 4 - 6
y = -2
Solution (4 , -2)
3.- x - y = 12
27 + 3y = 2x
x = 12 + y
27 + 3y = 2(12 + y)
27 + 3y = 24 + 2y
3y - 2y = 24 - 27
y = -3
x = 12 - 3
x = 9
Solution y = -3
4.- y = 2x + 14
-4x - y = 4
-4x - (2x + 14) = 4
-4x - 2x - 14 = 4
-6x = 4 + 14
-6x = 18
x = 18/-6
x = -3
y = 2(-3) + 14
y = -6 + 14
y = 8
Solution y = 8
