Question

escribe el número que falta en cada igualdad​

Answer 1

Respuesta:

$a)5 + 6 - x = 3 \\ 11 - x = 3 \\ 11 - 3 = x \\ 8 = x$

$b)7 + 9 + x - 4 = 17 \\ 12 + x = 17 \\ x = 17 - 12 \\ x = 5$

$c)x + 4 - 5 +9 = 13 \\ x + 8 = 13 \\ x = 13 - 8 \\ x = 5$

$d)3 + 9 \times x = 57 \\ 9 \times x = 57 - 3 \\ 9 \times x = 54 \\ x = 54 \div 9 \\ x =6$

$e)7 \times x + 9 - 4 = 47 \\ 7 \times x + 5= 47 \\ 7 \times x = 47 - 5 \\ 7 \times x = 42 \\ x = 42 \div 7 \\ x = 6$

$f)8 + 3 - x \times 5 = - 24 \\ 11 - x \times 5 = - 24 \\ - x \times 5 = - 24 - 11 \\ - x \times 5 = - 35 \\ - x = - 35 \div 5 \\ - x = - 7 \\ x = 7$

$a)7 + 4 + x - 6 = 5 + 4 \\ 5 + x = 9 \\ x = 9 - 5 \\ x = 4$

$b)12 - 8 + y - 3 = 21 + 4 \\ 1 + y = 25 \\ y = 25 - 1 \\ y = 24$

$c)3 + 2a - 8 - 5 = 25 + 3 \\ - 10 + 2a = 28 \\ 2a = 28 + 10 \\ 2a = 3 8\\ a = \frac{38}{2} \\ a = 19$

$d)32 + 8 - 4 + 5x + 9 = 20 + 5 \\ 45 + 5x = 25 \\ 5x = 25 - 45 \\ 5x = - 20 \\ x = \frac{ - 20}{5} \\ x = - 4$

$e)2w + 8 - 5 + 8 - 5 - 18 = 6 + 2 \\ 2w - 12 = 8 \\ 2w = 8 + 12 \\ 2w = 20 \\ w = \frac{20}{2} \\ w = 10$

Answer 2

Respuesta:

A -8X=3-5-6

X=8/ -8= -1

B 5X=17-7-9+4

X= 5/5= 1

C 5X=13-4-9+5

X=5/5=1

D 9X=57-3-45

X=9/9=1

E 7X=47-9+4-35

X=7/7=1

F 5X= -24-8-3

X= -5/5= -1

A X=5+4-7-4+6

X=4

B Y=21+4-12+8+3

Y=24

C 2A=25+3-3+8+5

A=38/2

A=19

D 5X=20+5-32-8+4-9

X= -20/5

X= -4

E 2W=6+2-8+5-8-5+18

W=10/2

W=5

Explicación paso a paso: