Answer:
Add 7 to both sides
Step-by-step explanation:
c - 7 + 7 = 0 + 7
c = 7
Answer: 1- 2:3
2- 4:7
3- draw 5 of something, then one of something else
4- same as 3
5- 10, 3, and 20
6- 14, 21, and 4
Step-by-step explanation:
Answer:
(1, - 2 )
Step-by-step explanation:
Given the 2 equations
3x + y = 1 → (1)
5x + y = 3 → (2)
Subtracting (1) from (2) term by term eliminates the term in y, that is
(5x - 3x) + (y - y) = (3 - 1) and simplifying
2x = 2 ( divide both sides by 2 )
x = 1
Substitute x = 1 in either of the 2 equations for corresponding value of y
Using (1), then
3 + y = 1 ( subtract 3 from both sides )
y = - 2
Solution is (1, - 2 )
Answer:
1
Step-by-step explanation:
plug 4 into x making -4-5 then solve it and it comes out as 1