How do you do this please help me

asked Jul 1, 2019 122k views

3 votes

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4 votes

Perimeter is the sum of the sides.
4x + 6 +3x + 2 = 57
7x + 8 = 57
7x = 49
x = 7

5.7k points

5 votes

The perimeter of a triangle is the sum of all sides' lengths.

Thus,

P=6+4x+(3x+2)=7x+8.

Given
$P=57\ cm,$ you get

$7x+8=57,\\ \\7x=57-8,\\ \\7x=49,\\ \\x=(49)/(7),\\ \\x=7\ cm.$

Answer: x=7 cm.

Jehof answered Jul 5, 2019

by Jehof

5.6k points

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