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8 votes
8 votes
What value of x makes this equation true? 12 x minus 15 = 6 minus 3 x

User Alexey Pelekh
by
2.7k points

2 Answers

12 votes
12 votes

Explanation:


12x - 15 = 6 - 3x

Move all x values to one side of the equation, and all constant values to the other side of the equation, and don't forget to flip the signs when going from left to right or vice versa.


12 x + 3x = 6 + 15


15x = 21


x = (21)/(15) = (7)/(5)

User IndoKnight
by
2.8k points
12 votes
12 votes

Answer:

Exact Form - 7/5

Decimal form - 1.4

Mixed Form 1 2/5

Explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

User Emre Tekince
by
2.5k points