Respuesta :

nbcorona36

Answer:

a=8

Explanation:

3a−7=9+a

Step 1: Simplify both sides of the equation.

3a−7=9+a

3a+−7=9+a

3a−7=a+9

Step 2: Subtract a from both sides.

3a−7−a=a+9−a

2a−7=9

Step 3: Add 7 to both sides.

2a−7+7=9+7

2a=16

Step 4: Divide both sides by 2.

2a/2 = 16/2

9rorellanaguzman

Answer:

the answer is a=8

Explanation:

3a−7=9+a

Step 1: Simplify both sides of the equation.

3a−7=9+a

3a+−7=9+a

3a−7=a+9

Step 2: Subtract a from both sides.

3a−7−a=a+9−a

2a−7=9

Step 3: Add 7 to both sides.

2a−7+7=9+7

2a=16

Step 4: Divide both sides by 2.

2a/2 = 16/2

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