traveanb88p0laty traveanb88p0laty

07-12-2017
Mathematics

contestada

How to solve in substitution
Y=2x-10
2y=x-8

Respuesta :

Аноним Аноним

07-12-2017

2(2x-10)=x-8
4x-20=x-8
3x=12
x=4

Answer Link

dannielle dannielle

07-12-2017

2*y= x - 8, y= 2x - 10

2* (2x-10)= x - 8
2*2x - 2*10= x - 8
4x - 20= x - 8 | +20
4x = x + 20 - 8 = x + 12 | - x
4x - x = 12
3x = 12
x= 12:3
x= 4

y= 2*4 - 10
y= 8 - 10
y= - 2

Answer Link

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