Answer:
The value of 6x - 5 is -1.4
Explanation:
Always remember PEMDAS: Parentheses Exponents Multiplication or Division (left to right) Addition or Subtraction (left to right) (In that order at all times is how you solve)
First start by finding the amount of x in "3x + 7 = 12"
To do this you must start by doing Subtraction Property of Equality
(Otherwise known as subtracting 7 from both sides.)
3x + 7 = 12
3x = 5
Now use Division Property of Equality
(Divide 3 from both sides)
x = 3/5 = 0.6
We will use the decimal. Now that we know that x = 0.6 we will insert the value of x into the other equation
x = 0.6
Given: 6x - 5
6(0.6) - 5
Now multiply
3.6 - 5
Lastly subtract
-1.4
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