Answer :

7x=21

7x/7 =21/7
cross out both 7s bring down the x then you solve 21 divided by 7 which equals 3 so your answer is going to be x=3
TheBlueFox

Answer: x = 3

Explanation: To solve for x, we must first isolate x and the division property of equality allows to divide bt 7 on both sides of the equation.

On the left the 7's cancel and on the right, 21 divided by 7 is 3.

So we have x = 3.

My work is also shown in the image attached.

${teks-lihat-gambar} TheBlueFox