Answer:
Step-by-step explanation:
10x-9y=24....(1)
y=x-2...(2)
Substitute (2) into (1)
10x-9(x-2)=24
10x-9x+18=24
x+18=24
Substrate 18 from both sides
x=6
Substitute the value of x in (2)
y=6-2
y=4
When x=6,y=4
Answer: we multiply the second equation by -2. This property is the multiplication property of equality (1).
Then, we add the two equations generated. (2) addition property of inequality.
Next, we divide both sides of the equation by 13. That is division property of inequality.
Moreover, we substitute the value obtained for y in the first equation. This is substitution property of equality.
Then, we simplify
Next, we add +3 to both sides of the equation in order to have an equation with only one side having a variable. That is addition property of equality.
Lastly, we divide both sides of the equation by 4. This is division property of equality.
Step-by-step explanation:
Answer:
21x - 15
Step-by-step explanation:
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Answer:
-a+-2b+4c
Step-by-step explanation:
Combine like terms
-4a+ 3a= -a
b+ -3b= -2b
3c+ c= 4c
Answer:
20x
Step-by-step explanation:
20 x^3/ x^2
20 x x x
----------------
x x
Cancel the x's
20 x
---------
1
20x
