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Twice a variable added to four is 34. Find the variable.
2x + 4 = 34
X = 15
Twice a variable subtracted by four is 34. Find the variable.
2X - 4 = 34
2X = 38
X = 38/2
X = 19
Triple a number added to eleven
3X + 11
Twice a number plus six
2X + 6
Solve the equation:
−20 = −4x − 6x
2 = X
The sum of twelve times de number of pets and five times the number of pets
12P + 5P
The number of boys multiplied by the number of girls
B*G
Three times a number subtracted by 7 is 14
3X - 7 = 14
3X = 14 +7
3X = 21
X = 21/3
X = 7
The sum of a number and 4 is multiplied by 16, then subtracted from 40
40 - 16 (X + 4)
Half the number of cards
X / 2
If 5 is subtracted from twice an unknown number, it is equal to 13.
2X - 5 = 13
2X = 18
X = 18/2
X = 9
The add of six and a number divided by 3 is 4. Find the number.
(6 + X) / 3 = 4
6 + X = 4 * 3
6 + X = 12
X = 12 - 6
X = 6
The number of sisters plus the number of brothers
S + B
Three times a number plus a new number
3X + Y
Solve the equation:
a + 5 = −5a + 5
a = 0
Solve the equation:
14 = −( p − 8)
p = -6
−3(4x + 3) + 4(6x + 1) = 43
X = 4
Solve the equation:
2(4x − 3) − 8 = 4 + 2x
If 6 times a number is decreased by 6, the result is the same as when 3 times the number is increased by 12.
6X - 6 = 3X + 12
X = 6
Solve the equation:
−(7 − 4x) = 9
Solve the equation:
5p − 14 = 8 p + 4
p = -6
Solve the equation:
12 = −4(−6x − 3)
The perimeter of an equilateral triangle is 60 meters. How long is each side?
X + X + X = 60
3X = 60
X = 20
Solve the equation:
3n − 5 = −8(6 + 5n)
n = -1
A number subtracted from 9 is equal to 2 times the number. Find the number.
9 - X = 2X
9 = 2X + X
9 = 3X
9/3 = X
3 = X