algebra 1b
posted by erica .
i need to know how to solve certain problems like this
4x=2y10
x+2y=5
i need examples of this and shown to me step by step

4x=2y10
[step 1] 2y 2y
2y+4x=10
[step 2] 4x 4x
2y=4x10
[step 3] divide both sides by 2
y=2x+5 Â«answer!! 
With first equation get x alone on one side.
x = .5y  2.5
Substitute that value for x in the second equation and solve for y. Put that y value into the first equation to find value of x. To check, put both values into the second equation.
I hope this helps a little more. Thanks for asking.
Respond to this Question
Similar Questions

algebra
i need help step by step instructions for 2 problems i got the rest but these 2 are harder 7q+2=11q8q 8(j3)=4j+9j14 
algebra 2
I need step by step directions on how to solve examples like this one. 2x^13x7=0 Thanks in advance for the help 
Chemistry
Hi! I need help with the step by step procedure for chemical equilibrium problems. Here is an example: Given two reactions: a. PbCl2 <> Pb^(2+) + 2Cl^() K = 1.76*10^(10) b. AgCl <> Ag^(+) + Cl^() K = 1.11*10^(4) … 
Algebra help
f(x)=x^34x^2x+4 How do I find the xintercept for this? 
Math
Can you please explain step by step on how to do each of these two problems below? 
Algebra
Can someone please help me with math problem and explain to me step by step how to solve it so I will know how solve other problems like this Thank you in advance Multiply and then, if possible, simplify by factoring /7x /21y 
PreCalculus II
perform the indicated operation (3sinx2)(sinx+1) I need someone who can help me to understand what I am supposed to be doing with this problem, a step by step would be increasingly helpful so that I can apply it to other problems … 
Algebra 2
I need help trying to solve trigonometric identity problems I just need help if someone could break it down step by step how to solve for: if cos of theta is 3/5 find csc of theta 
Algebra 2
I need step by step on how to solve this problem plz help I've been trying to figure it out for like an hour. Solve the system using the elimination method. 4xy+2z=18 x+2y+z=11 3x+3y4z=44 
algebra
Hi I need help with this question. I am not asking for the answer because if not I wont learn like that. I am looking for a good step by step explanation. Thank you. Solve for x: 5x + 2 = 4x − 9.