Question

Resolver las ecuaciones ( encontrar los valores de cada una de las letras)
• n +135 = 200
• 200 - m = 130
• m/5 = 70
• 3m + 1000 = 4600
• c + 120 = 250
• 5(k) = 50
• b/20=15
• -48 + n = 180
• -25-c=-168
• 7a + 160 = 300
• 8m + 100 = 500

Answer 1

Respuesta:

$n + 135 = 200 \\ n = 200 - 135 \\ n = 65$

$200 - m = 130 \\ 200 - 130 = m \\ 70 = m$

$\frac{m}{5} =7 0 \\ 5 \times \frac{m}{5} = 5 \times 70 \\ m = 350$

$3m + 1000 = 4600 \\ 3m = 4600 - 1000 \\ 3m = 3600 \\ m = \frac{3600}{3} \\ m = 1200$

$c + 120 = 250 \\ c = 250 - 120 \\ c = 130$

$5k = 50 \\ k = \frac{50}{5} \\ k = 10$

$\frac{b}{20} = 15 \\ 20 \times \frac{b}{20} = 20 \times 15 \\b = 300$

$- 48 + n = 180 \\ n = 180 + 48 \\ n = 228$

$- 25 - c = - 168 \\ - 25 + 168 = c \\ 143 = c$

$7a + 160 = 300 \\ 7a = 300 - 160 \\ 7a = 140 \\ a = 20$

$8m + 100 = 500 \\ 8m = 500 - 100 \\ 8m = 400 \\ m = 50$