Solve it pleasePLEASE*
1 answer:
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we have
Combine like terms in both sides
we know that
substitute in the expression above
-----> equation A
Multiply equation A by both sides
---------> equation B
Group terms that contain the same variable, and move the constant to the opposite side of the equation
---------> equation C
Solve for x
We are going to proceed to verify each case to determine the solution.
<u>Case a)</u>
the case a) is equal to the equation A
so
the case a) have the same solution that the given equation
<u>Case b)</u>
Combine like terms in left side
the case b) is equal to the equation B
so
the case b) have the same solution that the given equation
<u>Case c)</u>
Combine like terms in left side
therefore
the case c) not have the same solution that the given equation
<u>Case d)</u>
Combine like terms in left side
the case d) is equal to the equation C
so
the case d) have the same solution that the given equation
<u>Case e)</u>
Combine like terms in left side
therefore
the case e) not have the same solution that the given equation
therefore
<u>the answer is</u>
case a)
case b)
case d)
Answer:
a. A = -1 and B = 1
b. A = 7 and B = -5
Step-by-step explanation:
a.
To the equation be true, the "x-parts" and "nonx-parts" mist be the same, so:
Ax + Bx = 0
(A + B)x = 0
A + B = 0
A = -B
B - A = 2
B - (-B) = 2
2B = 2
B = 1 and A = -1
b.
To the equation be true, the "x-parts" and "nonx-parts" mist be the same, so:
Ax + Bx = 2x
(A + B)x = 2x
A + B = 2
A = 2 - B
2A + 3B = -1
2*(2-B) + 3B = -1
4 - 2B + 3B = -1
B = -5 and A = 2 - (-5) = 7