Respuesta :

i think it would be 60
^the answer above is wrong. The answer is 9.

10x = 90
Divide both sides by 10, and you get, x = 9.

To check:
Plug in 9 for x in the diagram above.
6(9) + 4(9)
54 + 36
=90, which is given as a clue on the left side.
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