3(2i+7)=6i+21

To solve the equation, we need to distribute the 3 to both terms inside the parentheses:

3 * 2i + 3 * 7 = 6i + 21

Simplifying, we have:

6i + 21 = 6i + 21

Now, subtracting 6i from both sides, we get:

21 = 21

Since both sides of the equation are equal, the solution is all real numbers.

3(2i−7)=15

To solve the equation, we need to distribute the 3 to both terms inside the parentheses:

3 * 2i - 3 * 7 = 15

Simplifying, we have:

6i - 21 = 15

Now, add 21 to both sides, we get:

6i = 36

Finally, divide both sides by 6:

i = 6

Therefore, the solution to the equation is i = 6.

3i+5=3i+7