Answer:
78
Step-by-step explanation:
11 + x = 89 Subtract 11
11 - 11 + x = 89 -11
x = 78
Hey there!
Given;
y+x= 89.......(a)
y = 11
~ Substitute the value of y on equation (a)
11+x = 89
~ Subtract 11 from both sides.
11+X -11 = 89-11
x = 78.
Therefore, the value of x is 78.
Hope it helps....
