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help!! i’ve tried this problem many times and i am completely stuck

Help Ive Tried This Problem Many Times And I Am Completely Stuck class=

Sagot :

Answer:

x=12

Step-by-step explanation:

the two inside numbers= the outside, so it would be 7x+21=9x-3. and i would guess that you know it from there. but u would subtract 21 from both sides and then subtract 9x from each side which gives u -2x=-24 and the division cancles the negitive giving u 12. i kindly ask for briainliest :)