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Luba_88 [7]
3 years ago
6

What is the substitution 3x-5y=11;x=3y+1

Mathematics
2 answers:
slavikrds [6]3 years ago
7 0

3x-5y=11 ------- 1

x=3y+1――――2

from 2 make x subject of the formula

x=3y+1――――3

so put (3y+1)for x in 1

3(3y+1)-5y=11

9y+3-5y=11

4y+3=11

4y=11-3

4y=8

divide both side by 4

y=2――――4

put 2 for y in 3

x=3y+1

x=3(2)+1

x =7

nikitadnepr [17]3 years ago
3 0
Substitute 3x+1 for x. Then solve from there
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