Question

2(x-1)-1=8 com calculo

Answer 1

Resolução:

$\mathsf{2\left(x-1\right)-1=8}\\\\\mathsf{2x-2-1=8}\\\\\\\mathsf{2x-3=8}\\\\\\\mathsf{2x=8+3}\\\\\\\mathsf{2x=11}\\\\\\\boxed{\mathsf{x=\dfrac{11}{2}}}\: \: \checkmark$

Answer 2

Resposta:

2(x - 1) - 1 = 8

2x - 2 - 1 = 8

2x - 3 = 8

2x = 8 + 3

2x = 11

x = 11/2

x = 5,5