if 8x-7y=11 and 7x-8y=4 then what is the value of x+y
Answers
Answered by
6
Answer:
7
Step-by-step explanation:
x=(11+7y)/8
so
7((11+7y)/8)-8y=4
= 77/8 + 49y/8 -8y =4
=(49y-64y)/8=(32-77)/8
=15y=45
=y=3
then x = 11+21/8
=32/8 = 4
so x+y = 4+3 =7
Answered by
1
answer is 7
Step-by-step explanation:
ok markndnd d bddbe s s
Attachments:
Similar questions