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