1)(x-14)/(x-7)=2/3 // *3(x-7) D: x-7#0 x≠7
3(x-14)=2(x-7)
3x-42=2x-14
3x-2x=42-14
X=28
2)(x-12)/(x-13)=12/11 // *11(x-13) D: x-13≠0 , x≠13
11(x-12)=12(x-13)
11x-132=12x-156
X=24
3)(x-12)/x =-4 // *x D: x≠0
x-12=-4x
x+4x=12
5x=12
X=12/5 = 2 2/5
4) (x-12)/x =4 // *x D:x≠0
x-12=4x
3x=-12
X=-4
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
1)(x-14)/(x-7)=2/3 // *3(x-7) D: x-7#0 x≠7
3(x-14)=2(x-7)
3x-42=2x-14
3x-2x=42-14
X=28
2)(x-12)/(x-13)=12/11 // *11(x-13) D: x-13≠0 , x≠13
11(x-12)=12(x-13)
11x-132=12x-156
X=24
3)(x-12)/x =-4 // *x D: x≠0
x-12=-4x
x+4x=12
5x=12
X=12/5 = 2 2/5
4) (x-12)/x =4 // *x D:x≠0
x-12=4x
3x=-12
X=-4