4x + 6 = -10
x = -4
What is the largest known land animal?
Elephant
I will meet her (at/in/on) two months.
in
Paul isn't here (at/in/on) the moment.
at
This essential gas is important so that we can breathe.
Oxygen
What's the capital city of Espírito Santo?
Vitória
What's the capital city of Maranhão?
São Luís
We've got English (at/in/on) Thursday.
on
What’s the boiling point of water?
100 degrees Celcius
x + 15 = 6
x = -9
What do bees collect and use to create honey?
Nectar
What is the hottest planet in the solar system?
Venus
4x + 2x + 4 = 5x + 3 + 11
x = 10
We usually have lunch (at/in/on) one.
at
My birthday is (at/in/on) the 6th of May.
on
12x + 0 = 144
x = 12
-3 + 2x = 11
x = 7
2x - 10 = 10 - 3x
x = 4
15 + 5x = 0
x = -3
3 x + 4 + 2 = 12 + 3
x = 3
I usually get up (at/in/on) half past eight.
at
-10x - 19 = 19 - 8x
x = -19
x + 9 = 18 - 2x
x = 3
-x - 1 = 221 + 2x
x = -74
The earth has three layers of varying temperatures. What are its three layers?
Crust, mantle, and core
17x - 12 = 114 + 3x
x = 9
What is the rarest blood type?
AB negative
What's the capital city of Amapá?
Macapá
Come and see us (at/in/on) Christmas Day.
on
It rains a lot (at/in/on) winter.
in
3x = 9
x = 3
What's the capital city of Bahia?
Salvador
Can you come (at/in/on) Monday?
on
How many teeth does an adult human have?
32
What's the capital city of Acre?
Rio Branco
What is the nearest planet to the sun?
Mercury
I'm going to Italy (at/in/on) a week.
in
I'll be back (at/in/on) ten minutes.
in
What's the capital city of Ceará?
Fortaleza
What's the capital city of Amazonas?
Manaus
5y + 3 = 2y + 9
y = 2
What is the largest planet in the solar system?
Jupiter
My grandfather died (at/in/on) 1987.
in
2x + 6 = 4x - 2
x = 4
What's the capital city of Alagoas?
Maceió