Answer:
9x -18+18=43+18
Step-by-step explanation:
added 18 to both sides
hope this helps good luck :)
Answer:
1. equation
2.equation
3.equation
4. expression
5.expression
6.equation
7.expression
8.equation
9.expression
anything with = is an equation, without is expression.
Hello
cos ( x + pi/2) =cos(x)cos(pi/2)-sin(x) sin(pi/2)
= cos(x)×0-sin(x) ×1
cos ( x + pi/2) = - sin(x)
