Question

expresa con un enunciado:
• 5a+16=26
• b–28=1
• 3c+7=31
• m–n=9
• x+(x+1)+(x+2)=19
• x+(x+2)+(x+4)=40
• a+2a=57
• z/3=45
• m/5+9=13
• 5p–6=34​

Answer 1

$5a + 16 = 26 \\ 5a = 26 - 16 \\ 5a = 10 \\ a = 2$

$b - 28 = 1 \\ b = 1 + 28 \\ b = 29$

$3c + 7 = 31 \\ 3c = 31 - 7 \\ 3c = 24 \\ c = 8$

$x + (x + 1 ) + (x + 2) = 19 \\ x + x + 1 + x + 2 = 19 \\ 3x + 3 = 19 \\ 3x = 19 - 3 \\ 3x = 16 \\ x = \frac{16}{3}$

$x + (x + 2) + (x + 4) = 40 \\ x + x + 2 + x + 4 = 40 \\ 3x + 6 = 40 \\ 3x = 40 - 6 \\ 3x = 34 \\ x = \frac{34}{3}$

$a + 2a = 57 \\ 3a = 57 \\ a = \frac{57}{3} \\ a = 19$

$\frac{z}{3} = 45 \\ 3 \times \frac{z}{3} = 3 \times 45 \\ z = 135$

$\frac{m}{5} + 9 = 13 \\ 5( \frac{m}{5} + 9) = 5 \times 13 \\ m + 45 = 65 \\ m = 65 - 45 \\ m = 20$

$5p - 6 = 34 \\ 5p = 34 + 6 \\5 p = 40 \\ p = 8$