Question

como resolver a equação 30-3x+10=2x+100

Answer 1

30-3x+10=2x+200
-3x-2x=100-30-10
-5x=60
x=$\frac{60}{-5}$
x=-12

Answer 2

$\large\sf{}30 - 3x + 10 = 2x + 100 \\\large\sf{}40 - 3x = 2x + 100 \\\large\sf{}40 - 3x - 2x = 100 \\\large\sf{} - 3x - 2x = 100 - 40 \\\large\sf{} - 5x = 100 - 40 \\ \large\sf{} - 5x = 60 \\ \\\large\sf{} - 5x \div \left( - 5\right) = 60 \div \left( - 5\right) \\ \large\sf{}x = 60 \div \left( - 5\right) \\ \large\sf{}x = - 12 \\ \\ \bm{\large\boxed{\boxed{  { \large \sf x = - 12}}}}$

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