3x = 2 (7 + 5x)
x = -2
To solve this equation, first distribute the 2 by multiplying it with both terms inside the parentheses.
3x = 14 + 10x
Next, isolate the variable terms on one side (in this case we’ll choose to move the 10x term to the right side) by subtracting 10x from both sides of the equation:
3x – 10x = 14
Simplify by combining like terms:
-7x = 14
Finally, solve for x by dividing both sides by -7:
x = -2
Therefore, the solution to the equation 3x = 2 (7 + 5x) is x = -2.
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