Check this please? Triangle ABC is congruent to triangle DFE. Find x. I got
1/2x+2=10

1/2x=8

x=4, but then when you plug it in and check (1/2(4)+2) it equals 4, not 10?

Question

Check this please? Triangle ABC is congruent to triangle DFE. Find x. I got
 1/2x+2=10

1/2x=8

x=4, but then when you plug it in and check (1/2(4)+2) it equals 4, not 10?

k.binks · Answer

anonymous · Answer

Do you think x=4 is the correct answer?

k.binks · Answer

I don't know, I thought solved it correctly but then the sides are suppose to be congruent and when I plug it in to check, they don't add up.

anonymous · Answer

$$(1/2)x+2=10$$
Subtract 2 from both sides
$$(1/2)x=8$$
x would be 16

k.binks · Answer

I thought 8/ (1/2) would make it 4? Was I doing that backwards? Because when I put that in my calculator it says its 4 too.

anonymous · Answer

Whenever you want to check your work, always plug in the x first when it is being multiplied or divided then subtract or add.

anonymous · Answer

8/(1/2) should be 16.
 $$\frac{ 8 }{ 1/2 } $$ is the same as 8/(1/2)
The equation in the problem is (1/2)x+2=10
so (1/2)x is the same as $$\frac{ 1 }{ 2 }x$$ meaning you multiply 8 by (1/2) equals 4
but the answer is x=16, not x=8

k.binks · Answer

Ohhh ok, I get it now! I have an awful understanding of fractions so I always do those on the calculator and I wasn't putting it in correctly. I understand now, sorry it took so long. Thank you!

anonymous · Answer

Yea, don't forget to put the ( and ) in the calculator. Glad you understand it.