Answer:
(21-x)/x=1/2
or,42-2x=x
or,42=3x
or,42/3=x
or,x=14
so,the value of x is 14
Step-by-step explanation:
the sum of 2 number is 28
x + y = 28
x is 3 times the second number y
x = 3y
M+ N = 4w^4-7z^4+6w^2z^2
<em>0.2 √15</em>
