Find the variable
0.3a+(0.2a-0.5)+0.2(a+2)=1.3
The variable, I assume, is a.
If you want to know the value of a, use algebra to get
0.5a -0.5 +0.2a +0.4 = 1.3
0.7 a = 1.4
Divide both sides by 0.7 for the final answer.
a=2
To find the variable in the equation 0.3a + (0.2a - 0.5) + 0.2(a + 2) = 1.3, we need to solve for 'a.'
Step 1: Simplify the equation.
First, we start by simplifying the equation using the distributive property. This involves multiplying the coefficients outside the parentheses with every term inside the parentheses.
0.3a + 0.2a - 0.5 + 0.2a + 0.4 = 1.3
Simplify further by combining like terms.
(0.3a + 0.2a + 0.2a) - 0.5 + 0.4 = 1.3
0.7a - 0.1 = 1.3
Step 2: Isolate the variable 'a.'
Next, we need to isolate the 'a' term by moving the constant term (-0.1) to the other side of the equation.
To do this, we add 0.1 to both sides of the equation.
0.7a - 0.1 + 0.1 = 1.3 + 0.1
0.7a = 1.4
Step 3: Solve for 'a.'
Finally, we divide both sides of the equation by 0.7 to solve for 'a.'
(0.7a) / 0.7 = 1.4 / 0.7
a = 2
Therefore, the variable 'a' in the equation 0.3a + (0.2a - 0.5) + 0.2(a + 2) = 1.3 is equal to 2.