Answer:
Step-by-step explanation:
Here is an example:
−
1
10
x
+
2
y
=
4
5
7
3
21
Step 1: Multiply Equation #1 by the LCM which 10.
(
)
8
Step 2: Multiply Equation #2 by the LCM which is 21.
Step 3: Place the new equations together
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Answers & Comments
Answer:
Step-by-step explanation:
Here is an example:
−
1
10
x
+
1
2
y
=
4
5
1
7
x
+
1
3
y
=
−
2
21
Step 1: Multiply Equation #1 by the LCM which 10.
10
(
−
1
10
x
+
1
2
y
)
=
(
4
5
)
10
10
(
−
1
10
x
)
+
10
(
1
2
y
)
=
(
4
5
)
10
−
x
+
5
y
=
8
Step 2: Multiply Equation #2 by the LCM which is 21.
21
(
1
7
x
+
1
3
y
)
=
(
−
2
21
)
21
21
(
1
7
x
)
+
21
(
1
3
y
)
=
(
−
2
21
)
21
3
x
+
7
y
=
−
2
Step 3: Place the new equations together