if we assume that the lines BC and the ilne that pint A is on are paralell since they didn't specify
remember at interior angles are congruent
also oppiotie angles are congruent
therefor angle x is congruent to 3x-70
so solve
x=3x-70
add 70 to both sides
70+x=3x
subtract x from both sides
70=2x
divide by 2
35=x
angle abc needs to be found
since that euals angle x
the asnwer is 35 degrees