Answer:
X is equal to 7/2 (3.5)
Explanation:
Bring the x terms to one sides and the constants to the other. It would be preferable to make the x term positive.
3x - x = 12 - 5
2x = 7
x = 7/2 or 3.5
x=3.5
3x+5=x+12
collect like terms
3x-x=12-5
2x=7
x=7÷2
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