Question

Calcule x sabendo que os ângulos sao complementares​

Answer 1

Resposta:

$\frac{3x}{4} + x - 50 = 90 \\ \frac{3x}{4} + \frac{x}{1} - 50 = 90 \\ m.m.c.(4.1) = 4 \\ \\ \frac{3x}{4} + \frac{4x}{4} - 50 = 90 \\ \frac{7x}{4} - 50 = 90 \\ \frac{7x}{4} = 90 + 50 \\ \frac{7x}{4} = 140 \\ 7x = 140 \times 4 \\ 7x = 560 \\ x = 560 \div 7 \\ x = 80$