Its easy try it urself or use an app called Cymath
Answer:
D
Step-by-step explanation:
The scale proportion is listed.
You need to cross multiply to get your answer, so 15 must be on top and x must be on the bottom.
<h3>
Answer:</h3><h2> -3x + y = 12</h2><h2> -2x + 4y = 18 </h2>
Step-by-step explanation:
first equation of new system would be the same as first one given:
<u>-3x + y = 12</u>
<u />
-3x+y + x+3y = -3x + x + y + 3y = -2x + 4y
12 + 6 = 18
so the second equation would be: <u>-2x + 4y = 18</u>
Because the 7 is used more than once.
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: