8-3x2 help with homework
2 answers:
Solution: The value of the given expression is 2.
Explanation:
The given expression is .
To solve an expression we have a rule which is named as BODMAS. The rule defines that which operation we will apply first.
B=Brackets, O=Order, D=Divide, M=Multiplication, A=Addition and S=Subtraction.
For the given expression first we will multiply 3 and 2, after that we wil subtract the result from 8.
Therefore, the value of the given expression is 2.
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Answer: Your brother is 15 years old right now.
Step-by-step explanation:
Let be "m" your currently age and "b" your brother's currently age.
Knowing that right now he is three times (this indicates multiplication) as old as you, you can write the following equation:
In five years your age will be:
And your brother's age will be:
Then, if in five years, your brother will be twice as old as you, you can set up the second equation:
Then, the System of equations is:
Apply the Substitution method and substitute the first equation into the second one and solve for "m":
Substitute the value of "m" into the first equation and evaluate in order to find "b":