TatianaKaplan TatianaKaplan

09-02-2017
Mathematics

contestada

Solve for x.
1. 6x - 3x = 12
2. 3x - 5 = x + 3
3. 1/2x + 1/5x = 14
4. 2.5x +1.0x = 7

Respuesta :

christinann062 christinann062

09-02-2017

1. x=4
6x-3x=12
3x=12
x=4

2. x=4
3x-5=x+3
3x=x+8
2x=8
x=4

3. x=20
1/2x+1/5x=14
7/10x=14
7x=140
x=20

4. x=2
2.5x+1.0x=7
3.5x=7
x=2

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