Answer:
(3, 5)
Step-by-step explanation:
y = 2x - 1
3x + 2y = 19
In the second equation, substitute 2x - 1 in for y, since y equals 2x - 1 in the first equation. Solve for x.
3x + 2(2x - 1) = 19
3x + 4x - 2 = 19
7x - 2 = 19
7x - 2 + 2 = 19 + 2
7x = 21
7x/7 = 21/7
x = 3
Pick the first equation to solve for y since it says y =. Substitute 3 in for x.
y = 2x - 1
y = 2(3) - 1
y = 6 - 1
y = 5
Answer:
x = 1
Step-by-step explanation:
Given
- 4y + 5x = 17 and (x - 3) is a solution
Substitute y = - 3 into the equation and solve for x
- 4(- 3) + 5x = 17
12 + 5x = 17 ( subtract 12 from both sides )
5x = 5 ( divide both sides by 5 )
x = 1
Solution is (1, - 3 )
Answer:
(5 , 3.8)
Step-by-step explanation:
Hope this help! :)