Answer:
-4+(-9)
Step-by-step explanation:
You change the minus signs into and addition sign and make the number a negative.
because -4-9= -13 and -4+(-9)=-13
an expression is numbers, symbols and operators (such as + and ×) grouped together that show the value of something and a equation is an equation says that two things are equal. (7+2=9) this is an equation
The length of the ladder is 9.2m
7 glasses/bottles :)
