Solve... 2(10-y) = 30
I got 25... but don't think its right
2(10-y) = 30
20 - 2y = 30
-10 = 2y
-5 = y
How do you do the first step???
I multiplied 2 times the quantity in parentheses. 2 x 10 = 20; 2 x y = 2y
To solve the equation 2(10-y) = 30, you need to follow a specific set of steps. Let's go through it together:
Step 1: First, distribute the 2 to both terms inside the parentheses:
2 * 10 - 2 * y = 30
Step 2: Simplify by multiplying:
20 - 2y = 30
Step 3: Next, isolate the variable term (-2y) by subtracting 20 from both sides of the equation:
20 - 20 - 2y = 30 - 20
-2y = 10
Step 4: To solve for y, divide both sides of the equation by -2:
-2y / -2 = 10 / -2
y = -5
Therefore, the correct answer to the equation 2(10-y) = 30 is y = -5.