(x-5x)/3=(x+2)/6-1

(x-5x)/3=(x+2)/6-1

x=4/9.

5x=15-3(x-1)

5x=15-3(x-1)
5x=15-3x+3
8x=18
x=9/4
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15-15 of x = 1.5x 15 of X, the solution is x = 1 of 3, right?

The two sides of the equation multiply by 1.5x
22.5-22.5x=15
22.5x=7.5
x=1/3
That's right

(15%×5%)+3.5X=X-1
Be complete

15% × 5%
(15%×5%)+3.5X=X-1
0.0075+3.5X=X-1
3.5X-X=-1-0.0075
2.5X=-1.0075
X=-0.403
15% + 5%:
(15%+5%)+3.5X=X-1
0.2+3.5X=X-1
3.5X-X=-1-0.2
2.5X=-1.2
X=-0.48