Answer:
Multiply each equation by the value that makes the coefficients of
x
opposite.
(
−
3
)
⋅
(
2
x
+
5
y
)
=
(
−
3
)
(
20
)
(
2
)
⋅
(
3
x
−
10
y
)
=
(
2
)
(
37
)
Step-by-step explanation:
Karl did because $58 for 20 pieces is cheaper than $63 for 21 and $3 for 21 pieces.
Assuming the frame is rectangular, the perimeter is 2*width + 2*length. so 5*2 + 2*length = 24. subtract ten from both sides to get the 14 = 2*length. the length = 7.
Answer:
Equation
28 = X - 12
Solve for X
Isolate the X
28+12 = X
40 = X
Step-by-step explanation:
(2,-16) should be the answer