solve the following simultaneous equations by using substitution method
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In question 2
x+8y = 19
x=19-8y
2x+11y=28
putting x=19-8y in equation (II) we get
2 (19-8y)+11y=28
38-16y+11y =28
38-28=16y-11y
5y=10
y=2
putting y=2 in equation (I) we get
x+8 (2)=19
x+16=19
x=3
solve other examples in same way
x+8y = 19
x=19-8y
2x+11y=28
putting x=19-8y in equation (II) we get
2 (19-8y)+11y=28
38-16y+11y =28
38-28=16y-11y
5y=10
y=2
putting y=2 in equation (I) we get
x+8 (2)=19
x+16=19
x=3
solve other examples in same way
SanjanaRaj1:
plz solve all
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