Question

EQUAÇÕES:
A) 10 = 2x + 3
B) 17=8x - 7
C) 5m + 1 = 3m - 9
D) 4a + a - 5 = 2a + 11
E) w - 7 = 8w + 3 - 5w


OBRIGADA DESDE JÁ ♡♡♡

Answer 1

A) 10-3= 2x
7= 2x
x= 7/2= 3,5
B) 17= 8x-7
17+7=8x
24=8x
x= 24/8=3
C) 5m+1= 3m-9
5m-3m= -9+1
2m= -8
m= -8/2= -4
D) 4a+a-5=2a+11
5a-2a=11+5
3a=6
a= 6/3=2
E) w-7= 8w+3-5w
-7-3=8w-5w-w
-10=-2w
w= -10/-2= 5

Answer 2

A) 10=2x+3
-2x= -10 +3
-2x= -7 .(-1)
2x=7
X=7/2

B)17=8x-7
-8x= -17 -7
-8x= -24 .(-1)
8x=24
X= 24/8
X=3

C)5m+1=3m-9
5m -3m= -1 -9
2m=-10
m=-10/2
m=-5

D)4a+a-5=2a+11
4a+a-2a=5+11
5a-2a=16
3a=16
a=16/3

E)w-7=8w+3-5w
w-8w+5w=+7+3
+6w-8w=10
-2w=10 .(-1)
2w=-10
w=-10/2
w=-5