4 years ago

What is the value of x?

Mathematics

2 answers:

lawyer [7]4 years ago

7 0

Answer:

x=19, DE=84, EF=36

Step-by-step explanation:

Since the total value of DF is 120, DE and EF must add up to 120. Therefore:

4x+8+2x-2=120

Combine like terms:

6x+6=120

Divide both sides by 6:

x+1=20

Subtract 1 from both sides:

x=19

This means that DE is 4(19)+8=84, and EF is 2(19)-2=36.

Hope this helps!

Elan Coil [88]4 years ago

4 0

Answer:

19, 84 and 36

Step-by-step explanation:

DF=120

DF=DE+EF

DE=4x+8

EF=2x-2

4x+8+2x-2=120
6x+6=120
6x=114
x=114/6
x=19
DE=4x+8= 4*19+8= 84
EF=2x-2= 2*19-2= 36

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