234 - ( 34 - 20 . x ) = 100
34 - 20 . x = 234 - 100
34 - 20 . x = 134
20 . x = 34 - 134
20 . x = -100
x = -100 : 20
x = -5
34-20.x=234-100
34-20.x=134
20.x=34-134
20.x=-100
x=-100:20
x=-5
X= -5
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\(234-\left(34-20.x\right)=100\)
\(34-20x=234-100\Leftrightarrow34-20x=134\)
\(\Leftrightarrow20x=34-134\Leftrightarrow20x=-100\)
\(\Leftrightarrow x=\left(-100\right):20\)
\(\Leftrightarrow x=-5\)
234 - ( 34 - 20 . x ) = 100
\(\Leftrightarrow\) 34 - 20 . x = 234 - 100
\(\Leftrightarrow\) 34 - 20 . x = 134
\(\Leftrightarrow\) 20 . x = 34 - 134
\(\Leftrightarrow\) 20 . x = -100
\(\Leftrightarrow\) x = -100 : 20
\(\Leftrightarrow\) x = -5
\(234-\left(34-20.x\right)=100\)
\(34-20x=234-100\)
\(34-20x=134\)
\(20x=34-134\)
\(20x=-100\)
\(x=\left(-100\right):20\)
\(x=-5\)