5(2x - 4) = 45
10x - 20 = 45
10x = 45 + 20
10x = 65
x = 65/10 reduces to 13/2 or 6 1/2
You must begin by isolating the x.
1. add -35 to the other side of the equation
2. divide by 8 to get x by itself
Hope this helps!
First triangle side lengths: 9, 4, 8
First triangle perimeter: 21
Second triangle side lengths: 18, 8, 16
Second triangle perimeter: 42
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<span>(f+g)(x) ≥ 3 for all values of x</span>