d-13=5 is actually suppose to be solved liek this:
d - 13 = 5
+13 +13
The absoulte value of 13 is 13, it is negative so you have to add 13 to get to 0 so it can be cancelled out.
I think what you would do is add 2x to the other side so you have 2x+3 is greater than or equal to 5. Subtract 3 and then divide by 2 and you are left with x is greater than or equal to 1
Answer:
6
Step-by-step explanation:
Answer:
<em>x = 12 </em>
Step-by-step explanation:
(x + 42)° + 3x° = 90°
x + 3x + 42 = 90
4x = 90 - 42
4x = 48
<em>x = 12</em>
Solving equations with a variable on both sides requires multiple steps.
Let's look at how to solve one using properties step by step.
Example 1: 100 - 4x = 16x
Step 1: In the above equation, the first step is to identify the
variable. Clearly, it is x but the variable exists on both sides of the
equal sign.
Step 2: To simplify it, we can use the
properties of equality (addition and multiplication property of
equality) which says that if we perform an operation on one side, the
same should be done on the other side of the equal sign so that the
equation is balanced.
Using the addition property of equality, let's add 4x to both sides, we get.
100 - 4x + 4x = 16x +4 x
which equals, 100 = 20x
Now, dividing both sides by 20, we get
x = 5
For more complex equations, the usage of distributive property of
multiplication might be needed to isolate the variable and simplify.
