Hi there!
To solve this using substitution, we substitute the value of y in the equation.
5x + 8 = 8x + 9
Now, we simplify.
8 = 3x + 9
-1 = 3x
x = -1/3
We plug the value of x in,
y = 5 (-1/3) + 8
y = -1 2/3 + 8
y = 6 1/3
Hope this helps!
21 because a triangle is always going to equal 180 so add those then subtract and it’s 21
(x•19)4=752
x would be multiplied by 19 then after it’s getting multiplied by 4.

Compare to standard equation of SHM

Here


Well the above one are for extra knowledge .
Solution:-







So.
