Use the Substitution method to solve the system of equations.
x + y = -4
x - y = 2
solve for x in the second equation.
x= y+2
Put that in for x in the first equation:
x+y=-4
(y+2) + y = -4
solve for y. Then, x= y+2
i don't get it.How did you get that?What does x equal?
re read my post. I tell you how I got it. you will have then to solve for x, then, put that value of x back in the equation, and solve for y. Post your work.
does x =5?
i have been trying to
figure out how to solve this
problem but i just can't.
it seems so difficult.
i have already seen some
examples but i still don't
understand!!
SOLVE USING THE SUBSTITUTION METHOD.
EX. x+y=4
y=2x+1
please help in the easiest way.
thanks a lot!
:]]]
teach me how to do this
x=2y+7
x=y+4
Just folow this step and u get ur ansa if u hav a ques lyk x - y =0 eqn1 ,x + y =4.eqn2 . Firs t solv for x . X = 0 + y=y eqn 3 . .then substitute x in eqn 2 . . 0 + y + y =4 . 2y =4. y =2 . . . Sub y in eqn 3 x = y then x=2,y=2
Yes
pls how will I solve y=2x-4 3x+y=11
pls how will I solve y=2x-4 3x+y=11
and 2x+7=3 2x-y=3
To solve the system of equations using the substitution method, follow these steps:
1. Choose one of the equations and solve it for one variable in terms of the other. Let's choose the second equation:
x = y + 4
2. Substitute the expression for the variable you solved in step 1 into the other equation. Let's substitute x = y + 4 into the first equation:
(y + 4) + y = 4
3. Simplify the equation:
2y + 4 + y = 4
4. Combine like terms:
3y + 4 = 4
5. Subtract 4 from both sides to isolate the variable:
3y = 0
6. Divide both sides by 3 to solve for y:
y = 0
Now that we have the value of y, we can substitute it back into one of the original equations to find the value of x. Let's use the first equation:
x + y = -4
Substituting y = 0:
x + 0 = -4
Simplify the equation:
x = -4
Therefore, the solution to the system of equations is x = -4 and y = 0.
To solve the system given below using substitution, it is best to start by solving the first equation for y.
11x + y = 12
9y + 3x = 7
can you please explain please :)