Write the word sentence as an equation:
7 less than a number y is -26.
y - 7 = -26
100
What does the "Golden Rule" of algebra say?
Whatever you do to one side of the equation, you must do the other side.
200
a + 13 = 10
a = -3
200
y/7 = -8
y = -56
200
3/2b = 15
b = 10
200
Write the word sentence as an equation...then solve:
The product of a number y and -4 is 24.
-4y = 24
y = -6
200
What is the inverse operation of multiply by -3?
Divide by -3
300
121 = k - (-83)
k = 38
300
-c/9 = -24
c = 216
300
b - 1/2 = 3/4
b = 1 1/4 or b = 5/4 or b = 1.25
300
Write the word sentence as an equation...then solve:
The quotient of a number y and -3 is 15.
y/-3 = 15
y = -45
300
-5.6 = 0.8x
What is -7
400
12 + x + 24 = -100
x = -136
400
-11x = 275
x = -25
400
x - (-66.09) = 102.8
x = 36.71
400
The perimeter of a quadrilateral is 80 centimeters. 3 of the sides are lengths 12 cm, 31 cm, and 17 cm. WRITE and SOLVE an equation to find the length of the 4th side y.
y + 12 + 31 + 17 = 80 or y + 60 = 80
y = 20 cm
400
c/-0.29 = 5.5
What is -1.595
500
-27 = c - 10 - (-1) - 5
c = -13
500
-80 = x/15
x = -1200
500
-1.2y = 5.4
y = -4.5
500
The length of rope B is 20 yards. This is 8 yards more than the length of rope A. Write an equation you can use to find the length a of rope A. Then solve it.
20 = a + 8
a = 12
500
Write and solve this equation...
1/2 is the product of 2/3 and a number d.