Ayo coba dijawab....
Mencari nilai x
[tex]\begin{aligned} \sf 2x^{o} + 20^{o} &= \sf 90^{o} \\ \sf 2x^{o} &= \sf 90^{o} - 20^{o} \\ \sf 2x^{o} &= \sf 70^{o} \\ \sf x &= \sf 70^{o} : 2^{o} \\ \sf x &= \pink{\boxed{\bf 35^{o}} \sf \: (Opsi \: a)} \end{aligned}[/tex]
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Jadi, nilai x = [tex] \pink{\boxed{\bf 35^{o}}} [/tex]
