Q. 23. Solve the following pair of linear equations by substitution method:
2x + 7y = 9: 8x - y = 7
Answers
Answered by
3
2x+7y=9-------------------------------eq 1
8x-y=7---------------------------------eq 2
from eq 2
y=8x-7-------------------------------------eq 3
subsitute eq 3 in eq 1
2x+7(8x-7)=9
2x+56x-49=9
58x=9+49
58x=58
x=1
put x=1 in eq 3
y=8x-7
y=8(1)-7
y=8-7
y=1
Step-by-step explanation:
if u found my answer to be brainliest please mark me as brainliest
Similar questions