Answer:
Multiply by 3;9
Step-by-step explanation:
9/3=3
12/4=3
18/6=3
27/n=3
N=9
Answer:
My age is 78 years.
Explanation:
Define my age first as a variable.
Let my age be
x
years.
Reduced by means subtracted.
Subtract twice my age from 400 to get 244:
400
−
2
x
=
244
400
−
244
=
2
x
←
make x positive and isolate it.
156
=
2
x
78
=
x
Step-by-step explanation:
Answer:
- 
Step-by-step explanation:
=
( cross- multiply )
6x = 5y ( divide both sides by 6 )
x =
y
Then
← substitute x =
y into the expression
= 
= 
= 
=
× - 
= - 
Answer:
SAS triangle because a SAS stands for side angle side that's how u always know
Answer:
What's '2−7x'
Step-by-step explanation: