Hi please help me no links thank you

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Find the multiplicative inverse of 8-12i

Yuto and hila attempted to solve the same inequality. their work is shown below. which statement is true about the work shown above? yuto is correct because he isolated the variable correctly and reversed the inequality symbol. yuto is incorrect because he should not have reversed the inequality symbol. hila is correct because she isolated the variable correctly and reversed the inequality symbol. hila is incorrect because she should not have reversed the inequality symbol.