Answer :
If f(x)=-3 x+7 and g(x)=-7 x+3 , what is the value of f(-3)-g(3) is -8
Explanation
f(x) = -3x + 7
f(-3) = -3(-3) + 7 = 9 + 7 = 16
g(x) = -7x + 3
g(-3) = -7(-3) + 3 = 21 + 3 = 24
f(-3) - g(-3) = 16 - 24 = -8
How to solve an equation?
To solve linear equations, utilize the steps that are provided below.
- Remove parentheses from each side of the equation and combine similar terms to make it simpler.
- To separate the variable term on one side of the equation, use addition or subtraction.
- To find the variable, use division or multiplication.
- The common denominator can be multiplied by each side of the equation to eliminate fractions.
Lets take an example of solve z for 7z – (3z – 4) = 12
Here is no multiplication or division, so this will be easy to solve
⇒ 7z – (3z – 4) = 12
⇒ 7z – 3z + 4 = 12
⇒ 4z = 12 – 4
⇒ 4z = 8
⇒ z = 8/4
⇒ z = 2
See, that was so simple, using the mentioned methods, every linear equation can be solved easily.
Learn more about linear equations
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