Question

solve it 21-3(x-7)=x+20​

Answer 1

Answer:

$\frac{11}{2}$

Step-by-step explanation:

$21 - 3(x-7) = x+20\\\\21 - 3x + 21 = x+20\\\\21+21-3x=x+20\\\\42 - 3x = x+20\\\\42-20 = x+3x\\\\22 = 4x\\\\x = \frac{22}{4} \\\\x = \frac{11}{2}\\\\or \\x= 5.5$

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