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7x+5x-7=21+10x

Tell whether it has one solution, an infinite number of solutions, or no solutions, and identify the equation as an identity, a contradiction, or neither.
Give step by step explanation

Respuesta :

Advent5647

Answer:

One Solution

Step-by-step explanation:

Step 1:

7x + 5x - 7 = 21 + 10x  Equation

Step 2:

12x - 7 = 21 + 10x   Add

Step 3:

2x - 7 = 21   Subtract 10x on both sides

Step 4:

2x = 28   Add 7 on boths sides

Step 5:

28 ÷ 4    Divide

Answer:

x = 7

Hope This Helps :)

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