Respuesta :
Answer:
a = -3
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
a−2=
3+6a
3
a+−2=2a+1(Distribute)
a−2=2a+1
Step 2: Subtract 2a from both sides.
a−2−2a=2a+1−2a
−a−2=1
Step 3: Add 2 to both sides.
−a−2+2=1+2
−a=3
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Answer:
a = -3
Step-by-step explanation:
a - 2 = (3 + 6a)/3
Divide 3 + 6a by 3.
a - 2 = 1 + 2a
Subtract 2a from both sides.
-a - 2 = 1
Add 2 to both sides.
-a = 3
Multiply the equation by -1.
a = -3.
Proof:
a - 2 = (3 + 6a)/3
Substitute variable.
-3 - 2 = (3 + 6(-3))/3
Multiply inside parenthesis.
-3 - 2 = (3 + 18)/3
Add inside parenthesis.
-3 - 2 = (-15)/3
Divide.
-3 - 2 = -5
Subtract.
-5 = -5