How much is 3x + 2 = X-6

How much is 3x + 2 = X-6

3x-x= -6-2
2x= -8
x= -4
Is that so?

The equations 2x-y = 7 and ax + y = B have the same solutions as the equations x + by = A and 3x + y = 8. Find the value of ab
Wrong number. It's a, B

By combining 2x - y = 7 and 3x + y = 8, we get x = 3, y = - 1
Substituting ax + y = B and X + by = a yields
3a-1 = B and 3-B = a
We get a = 1, B = 2

The equations 2x − y = − 33x + y = 8 and ax + by = 2aX − by = 4 have the same solution, and the values of a and B are obtained

By solving the equations 2x − y = − 33x + y = 8, we get x = 1y = 5. By substituting the equations ax + by = 2aX − by = 4, we get a = 3B = − 15

The solution of the equation AX + B = BX + a (a is not equal to b) of X is_________________ .

ax＋b＝bx＋a
If the items of the same kind are merged, the
（a－b）x＝a－b
Because a is not equal to B
So (a-b) is not equal to 0
Divide both sides by (a-b) to get
x＝1
A: x = 1