Question

o numero 2 é a raiz da equação?



3x+7=2(x+4)+1

Answer 1

Olá

$\LARGE\tt{}3x + 7 = 2(x + 4) + 1 \\ \LARGE\tt{}3x + 7 = 2x + 8 + 1 \\ \LARGE\tt{}3x + 7 = 2x + 9 \\ \LARGE\tt{}3x + 7 - 2x = 9 \\ \LARGE\tt{}3x - 2x = 9 - 7 \\ \LARGE\tt{}x = 9 - 7 \\ \LARGE\tt{}{\large\boxed{\boxed{  { \LARGE \tt x = 2 }}}}$

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