∠1 and ∠2 are complementary angles. The measure of ∠1 is 42°. The measure of ∠2 is (3x)°. Find the value of x.

Me because some of question i don’t understand

Write the fraction or mixed number and the decimal shown by the model

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.