Question

Which of the following are the correct steps to solve the equation 3(4−2j)−j=−11+2(j−11)? *

3 points

12-7j=2j-33

12-5j=2j-11

9j=45

5j=21

j=5

j=4.5

​

Answer 1

12-7j=2j-33 .......✓

12-5j=2j-11 .......x

9j=45..........✓

5j=21 ......x

j=5.....✓

j=4.5...×

____________

Let's solve your equation step-by-step.

12−7j=2j−33

Step 1: Simplify both sides of the equation.

12−7j=2j−33

12+−7j=2j+−33

−7j+12=2j−33

Step 2: Subtract 2j from both sides.

−7j+12−2j=2j−33−2j

−9j+12=−33

Step 3: Subtract 12 from both sides.

−9j+12−12=−33−12

−9j=−45

Step 4: Divide both sides by -9.

−9j/(−9)=−45/(−9)

j=5