Question

Hola me pueden ayudar por favor

3+(-3)=
15+(-3)=
12+(-3)=
-3+(-3)=
-9+(-3)=
-12+(-3)=
a) 5÷(-1.21=
b) -6/5÷1/3=
c) -8.4÷(-2.2=
d) 7/8÷(-1/6)=
a) 12×( )=-180
b) ( )=×(-11)-99
c)12×( )=-180
d)-8×( ) =-168
e) ( )×(25)=-150
f) ( ) ×(-11)=99
ayudenme por favor es de matemáticas se los agradecería mucho​

Answer 1

3+(-3)

[+ × - = -]

3-3=0

15+(-3)

15-3=12

-3+(-3)

-3-3=-6

-9+(-3)

-9-3=-12

5/-1.21

[+ ÷ - = - ]

-1.21=-[121/100]

5/-[121/100]

5× -[100/121]

-[500/121]

-[4 16/121] or -[4.13](2 d.p)

-6/5÷1/3

-6/5×3/1

-18/5

-3.6

-8.4÷(-2.2)

- ÷ - = +

8.4÷2.2

84/10÷22/10

84/22

3.82(2d.p)

7/8÷(-1/6)

7/8 × -6/1

-42/8

-5.25

12×()= -180

make () the subject of formula by dividing both side by 12

()=-180/12

()= -15

()=(-11)-99

()=1089

-8×()=-168

()=-168/-8

()=21

()×(25)=-150

()=-150/25

()=-6

()×(-11)=99

()=99/-11

()=-9