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