Question

AB=3x
BC=10
AC=4x+1
X=
AB=
AC=​

Answer 1

3x+10=4x+1
-4x. -4x
-1x+10=1
-10 -10
-1x/-1=-9/-1
x=9

AB= 3x
AB=3(9)
AB=27
AC=4x+1
AC=4(9)+1
AC=36+1
AC=37

Answer 2

AB +BC = AC

3x +10 = 4x-1

10-1 = 4x-3x

9 = x

X=9

AB =3×9=27

AC = 4×9+1 =37