Answer:
Properties of operations help a lot in solving problems related to integers and rational numbers.
<u>Step-by-step explanation:</u>
There are four properties of operations in math. These properties are applicable in case of addition and multipication but not in case of division and subtraction.
These properties are used to solve problems involving rational numbers as well as integers.These properties are associative,commutative, distributive and identity.
commutative property is A+B=B+A
⇒5+4=4+5
and A*B=B*A
⇒5*4=4*5
associative property ( 32+14)+7= 32+(14+7)
( 8*9)*7= 8*(9*7)
Identity property is 35+0= 35
1*58=58
distributive property is 15*21
⇒ 15*(20+1)
⇒15*20+15*1
15*21
⇒ 15*(22-1)
⇒15*22-15*1
Johnny, Johnny
Yes, papa?
Eating sugar?
No, papa.
Telling lies?
No, papa.
Open your mouth!
HAHAHAH!
Answer:
28
Step-by-step explanation:
2x + 3y = 7
Now, since 8/2 is 4 and 12/3 is also 4, we can multiply the entire original equation by four in order to get the equation that we want
4(2x + 3y = 7)
8x + 12y = 28