Question

1- Resolva a inequacão a seguir:
12x + 15 > 1 8x - 45​

Answer 1

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$\sf{12x+15>18x-45}\\\sf{12x-18x>-45-15}\\\sf{-6x>-60\cdot(-1)}\\\sf{6x<60}\\\sf{x<\dfrac{60}{6}}\\\huge\boxed{\boxed{\boxed{\boxed{\sf{x<10}}}}}$

$\Large\boxed{\boxed{\boxed{\boxed{\sf{S=\{x\in\mathbb{R}/x<10\}}}}}}$