nanamath5662
05.10.2020 •
Mathematics
Find the area of a triangle with a height of 2x-3 and a base of x+8.
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Ответ:
5
Step-by-step explanation:Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-2x' to each side of the equation.
7 + 8x + -2x = 37 + 2x + -2x
Combine like terms: 8x + -2x = 6x
7 + 6x = 37 + 2x + -2x
Combine like terms: 2x + -2x = 0
7 + 6x = 37 + 0
7 + 6x = 37
Add '-7' to each side of the equation.
7 + -7 + 6x = 37 + -7
Combine like terms: 7 + -7 = 0
0 + 6x = 37 + -7
6x = 37 + -7
Combine like terms: 37 + -7 = 30
6x = 30
Divide each side by '6'.
x = 5
Simplifying
x = 5