Image row block is an easy way to add many images side by side as a one row. Add first "Image row block" to page and publish it. After that continue with below steps:
- Click "Create a new block" link in Images on row area to add new images.
- Choose display options how many images are needed in one row. If you have three images choose dispaly 1/3 for each.
Select "Margins" if you want space between images.
Publish the block.