Question

Solve the following equation 1)y+9=20​

Answer 1

Answer:

Step-by-step explanation:

so we have the equation y+9=20

and we know that 9 and 20 are numericals and y is a consant variable so we :

y+9=20

y=20-9 (we shift 9 to the right side and therefore the sign changes from + to -)

hence we can say

y=11