y= -3x+5
5x - 4y = -3
solve by substitution. steps please. these are just some examples i need to see to get the hang of it.

Question

anonymous · Answer

ok you know that 
$$y=-3x+5$$ no matter what. so replace y in the second equation by 
$$-3x+5$$ being careful with parentheses. you get 
$$5x-4(-3x+5)=-3$$

anonymous · Answer

5x - 4(-3x+5) = -3
5x +12x  - 20 = -3
17x = 17
x = 1
plug x-1 in second equn.
5 - 4y = -3
4y = 8
y = 2

x=1,y=2

anonymous · Answer

then solve via jimmyrep steps. notice first that you need parentheses around 
$$-3x+5$$ then you need to use the distributive law to get rid of the parentheses, i.e. distribute the -4

anonymous · Answer

that gets you to 
$$5x+12x-20=-3$$ then combine like terms to get the next step
$$17x-20=-3$$ then add 20 to get 
$$17x=17$$ then either think or divide by 17 to get 
$$x=1$$

anonymous · Answer

finally replace x  by 1 in the first equation to find y
$$y=-3(1)+5$$
$$y=2$$ and you answer is 
$$x=1,y=2$$ or 
$$(1,2)$$

anonymous · Answer

thanks so much, i think i got it now. or i am pretty close to fully understanding. thanks for all your help