Substitution method for 7x-2y=1 & x-2y=1

1 answer:

6 0

We want to use the Substitution method to solve
7x - 2y = 1 (1)
x - 2y = 1 (2)

From equation (1), obtain
2y = 7x - 1 (3)

Substitute (3) into (2).
x - (7x - 1) = 1
-6x + 1 = 1
-6x = 0
x = 0

From (3), obtain
2y = 7*0 - 1 = -1
y = -1/2

Answer: (0, -1/2) or x=0, y= -1/2.

You might be interested in

Which fraction is equal to 2/8?

valina [46]

D is the correct answer
You can convert 2/8 into 1/4 but finding the common factor which is 2 because 2 goes into both 2 and 8 in the fraction
Divide 2 with both 2 and 8
2 divides by 2 = 1
8 divides by 2= 4
1/4 is equal to 2/8

6 0

4 years ago

Read 2 more answers

X Which of the following equations is correct?

Tanya [424]

Answer:

Option A is correct

Step-by-step explanation:

Given:

There are four option is given.

We need to find correct option.

Now we check the given option.