Follow the pattern

10x + 5 = 35
\mathbf{10x + 5 = 35}

10x = 35 − 5
\mathbf{10x = 35 - 5}

3x + 6 = 24
\mathbf{3x + 6 = 24}

3x = 24 − 6
\mathbf{3x = 24 - 6}

4x + 9 = 33
\mathbf{4x + 9 = 33}

?
\mathbf{?}

4x = 33 + 9
\mathbf{4x = 33 + 9}

1

4x = 33 − 9
\mathbf{4x = 33 - 9}

2

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