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does anyone know how to do this

Does Anyone Know How To Do This class=

Sagot :

InsertNameHere7575idn

X = 9

All of the equations are equal since it is an equilateral triangle.

So, just pick two equations and solve them.

3x - 1 = 2(x + 4)

distribute

3x - 1 = 2x + 8

add 1 to both sides

3x = 2x + 9

subtract 2x from both sides

x = 9

DOUBLE-CHECK (If you want to)

4x ÷ 2 + 8 = 3x - 1

subtract 8 from both sides

4x ÷ 2 = 3x - 9

simplify

2x = 3x - 9

subtract 3x from both sides

-x = -9

divide both sides by -1

x = 9

TRIPLE-CHECK (If you want to)

4x ÷ 2 + 8 = 2(x + 4)

simplify

2x + 8 = 2x + 8 (It's already equal)

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