Question

Twice a number added to 3 times itself is equal to 90 . Find the number ​

Answer 1

Answer:

30

Step-by-step explanation:

   {22−m4m+41×2.2m}m1

={2×22−m(22)m+41×(2m+1)21}m1

={21−2m22m+21×22m+21}m1

={22m+2

Answer 2

x + x + 3 = 90

2x + 3 = 90

2x = 90 - 3

2x = 87

x = 87/2

x = 43.5

The number is 43.5