If 7x + 5 = -2, find the value of 8x.
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The value of 8x is -8
To find the value of 8x, we first need to solve the equation 7x + 5 = -2 to find the value of x. Here's how you can do it step by step:
Step 1: Start by isolating the term with x on one side of the equation.
Subtract 5 from both sides of the equation:
7x + 5 - 5 = -2 - 5
7x = -7
Step 2: Next, divide both sides of the equation by 7 to solve for x.
Divide both sides by 7:
7x/7 = -7/7
x = -1
Now that we know the value of x is -1, we can substitute it into the expression 8x to find its value:
8x = 8(-1) = -8
So, the value of 8x is -8.