Question

ayuda .
a. 40a+80=0
b. 35b-100=5
c. 42c+42=42
d. 13e+5=57
e. 3i-15=9
g. 62m-627=-193
h. 4n-6=-18
i. 4r+10=-10
j. 15s-10=80
k. 12t+10=70
L. 7×=1050
M. -12×=-144
N . 13×=325
ñ. 7×=301
O. 8×+20=284
P. 23×+30=582
Q. 43×-500=2682
r. 0.7×-=3=53

Answer 1

a)a=0-80/40
b)b=5+100/35
c)c=42-42/42
d)e=57-5/13
e)i=9+15/3
g)m=627-193/62
h)n=6-18/4
i)r=-10-10/4
j)s=80+10/15
k)t=70-10/12
l)x=1050/7
m)x=144/12
n)x=325/13
ñ)x=301/7
o)x=284-20/8
p)x=582-30/23
q)x=2682+500/43
r)x=53-23/0.7

Answer 2

$40a + 80 = 0 \\ 40a = - 80 \\ x =80 - 40 \\ x = - 2$

$35b - 100 = 5 \\ 35b = 5 + 100 \\ x = 105 \div 35 \\ x = 3$

$42c + 42 = 42 \\ 42c = 42 - 42 \\ c = 0 \div 42 \\ c = 0$

$13e + 5 = 57 \\ 13e = 57 - 5 \\ e = 52 \div 13 \\ e = 4$

$3i - 15 = 9 \\ 3i = 9 + 15 \\ i = 24 \div 3 \\ i = 8$

$62m - 627 = - 193 \\ 62m = - 193 + 627 \\ m = 434 \div 62 \\m = 7$

$4n - 6 = 18 \\ 4n = 18 + 6 \\ n = 24 \div 4 \\ n = 6$

$4r + 10 = - 10 \\ 4r = - 10 - 10 \\ r = - 20 \div 4 \\ r = - 5$

$15s - 10 = 80 \\ 15s = 80 + 10 \\ s = 90 \div 15 \\ s = 6$

$12t + 10 = 70 \\ 12t = 70 - 10 \\ t = 60 \div 12 \\ t = 5$

$7x = 1050 \\ x = 1050 \div 7 \\ x = 150$

$- 12x = - 144 \\ x = - 144 \div ( - 12) \\ x = + 12$

$13x = 325 \\ x = 325 \div 13 \\ x = 25$

$7x = 301 \\ x = 301 \div 7 \\ x = 43$

$8x + 20 = 284 \\ 8x = 284 - 2 0\\ x = 264 \div 8 \\ x = 33$

$23x + 30 = 582 \\ 23x = 582 - 30 \\ x = 552 \div 23 \\ x = 24$

$43x - 500 = 2682 \\ 43x = 2682 + 500 \\ x = 3182 \div 43 \\ x = 74$

$0.7x - 3 = 53 \\ 0.7x = 53 + 3 \\ x = 56 \div 0.7 \\ x = 80$

espero haberte ayudado