Solve 7x+y = 25 and 5x-y=11. Then x and y are
Answers
Answered by
1
7x+y=25 ------a
5x-y=11 ------b
from equation a
y=25-7x -----c
from equation b
y=5x-11 -------d
by putting value of y from equation c to equation d
5x-11=25-7x
5x+7x=25+11
12x= 36
x=3
put the value of x in equation d
y=5(3)-11
y= 15-11
y=4
x=3, y=4
Similar questions