Question

Dont try to type wrong ​

Answer 1

Step-by-step explanation:

5a) 3x+21=18

3x=18-21

3x=3

x=3/3=1

b) 2x-2=x+2

2x-x=2+2

x=4

Answer 2

✪Gɪᴠᴇɴ:-

• Fɪɴᴅ ᴛʜᴇ ᴍᴇᴀɴ ᴀɴᴅ ᴍᴇᴅɪᴀɴ ᴏғ

➪Tᴏ ғɪɴᴅ:-

• ᴍᴇᴀɴ ᴀɴᴅ ᴍᴇᴅɪᴀɴ ᴏғ ғɪʀsᴛ ᴛᴇɴ ᴏᴅᴅ ɴᴜᴍʙᴇʀs.

✔Aɴsᴡᴇʀ:-

1. 1 ᴍᴇᴀɴ
2. 1 ᴍᴇᴅɪᴀɴ

✪Tᴏ ғɪɴᴅ:-

• ғɪʀsᴛ sᴇᴠᴇɴ ᴍᴜʟᴛɪᴘʟᴇs ᴏғ 4

✔Aɴsᴡᴇʀ:-

• 1
• 2
• 3
• 4

✪Gɪᴠᴇɴ:-

• Fʀᴏᴍ ɴᴜᴍʙᴇʀs 1,3,5,7,8,11,15 ᴀ ɴᴜᴍʙᴇʀ ɪs ᴛᴏ ʙᴇ ᴘɪᴄᴋᴇᴅ ᴜᴘ ᴀᴛ ʀᴀɴᴅᴏᴍ ,ᴡʜᴀᴛ ɪs ᴛʜᴇ ᴘʀᴏʙᴀʙɪʟɪᴛʏ ᴏғ ᴄʜᴏᴏsɪɴɢ ᴀ ɴᴜᴍʙᴇʀ.

➪Tᴏ ғɪɴᴅ:-

• Lᴇss ᴛʜᴀɴ 8

✔Aɴsᴡᴇʀ:-

• 1
• 3
• 5
• 7

➪Tᴏ ғɪɴᴅ:-

• 5 ᴏʀ ᴍᴏʀᴇ

✔Aɴsᴡᴇʀ:-

• 7
• 8
• 11
• 15

✪Gɪᴠᴇɴ:-

• Sᴜɴɪʟ's ғᴀᴛʜᴇʀ ɪs 3 ᴛɪᴍᴇs ᴀs ᴏʟᴅ ᴀs Sᴜɴɪʟ.Aғᴛᴇʀ 10 ʏᴇᴀʀs ʜɪs ᴀɢᴇ ᴡɪʟʟ ʙᴇ ᴛᴡɪᴄᴇ ᴛʜᴇ ᴀɢᴇ ᴏғ ʜɪs sᴏɴ.Fɪɴᴅ ᴛʜᴇɪʀ ᴘʀᴇsᴇɴᴛ ᴀɢᴇs.

➪Tᴏ ғɪɴᴅ:-

• sᴜɴɪʟ ᴀɴᴅ ʜɪs ғᴀᴛʜᴇʀ's ᴘʀᴇsᴇɴᴛ ᴀɢᴇs.

✔Sᴏʟᴜᴛɪᴏɴ:-

1. Lᴇᴛ sᴜɴɪʟ's ғᴀᴛʜᴇʀ ᴀɢᴇ ʙᴇ x ᴀɴᴅ sᴜɴɪʟ'S ʙᴇ ʏ.
2. ʏ-3x=10x²
3. =>y-x=10x²/2
4. =>y-x=5x²
5. x=5
6. y=5×5
7. y=25
8. y=25×3
9. y=75

✪Gɪᴠᴇɴ:-

• Sᴏʟᴠᴇ ᴛʜᴇ ғᴏʟʟᴏᴡɪɴɢ ᴇǫᴜᴀᴛɪᴏɴs.

➪Tᴏ ғɪɴᴅ:-

• 3(x+7)=18

✔Sᴏʟᴜᴛɪᴏɴ:-

1. 3(x+7)=18
2. 3x=18-7
3. 3x=11
4. x=11/3
5. x=3*2/3

➪Tᴏ ғɪɴᴅ:-

• 2(x-1)=x+2

✔Sᴏʟᴜᴛɪᴏɴ:-

1. 2x-1=x+2
2. 2x=x+2+1
3. 2x=x+3
4. x=3-2
5. x=1

Hope it was helpful.....

Thanks for asking.....☺❤