Question

Solve using substitution:
2x = 1 - y
5x - 10y = -10
I NEED HELP

Answer 1

using the first equation
y=1-2x ...(1)
first substitute (1) in 5x-10y=-10 to find x
can you do that?

Answer 2

Can you go through this one step by step so I can use it to help with others??

Answer 3

okay thats what im doing :D

Answer 4

solving equations using substitution
first step
you choose one of the equations u have and solve it for x or for y .. but you always choose the easier one,

Answer 5

in this case, the easiest is the first equation , and since the coeffecient of y is 1 so solve for y

Answer 6

2x=1-y
becomes y=1-2x

Answer 7

are you following?

Answer 8

Yes kind of :)

Answer 9

okay the next step you substitute y=1-2x in y in the second equation which is
5x-10y=-10

substituting it the equation becomes
5x-10(1-2x)=-10

Answer 10

this way you find x

Answer 11

solve for x
5x-10+20x=-10
25x=0
x=0

then subtsitute x=0 in any one of the equations to find y

Answer 12

for example using 2x=1-y
2(0)=1-y
0=1-y
y=-1

Answer 13

Ok thank you!!:)