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postnew [5]
3 years ago
9

For the following system, if you isolated x in the second equation to use the Substitution Method, what expression would you sub

stitute into the first equation?
3x + y = 8
−x − 2y = −10
Mathematics
2 answers:
LekaFEV [45]3 years ago
7 0
Isolate x in 2nd equation...

-x - 2y = -10 ....add 2y to both sides
-x = 2y - 10 ...multiply by -1 to make x positive
x = -2y + 10 <== u would sub in -2y + 10 in for x in the 1st equation
MakcuM [25]3 years ago
6 0
The first equation would the most accurate; or 3x+y=8
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