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Solve Equations
Rearrange Formulas
Create Equations and Solve
100
3y - 4 + 5y = 6 - 2y
What is y = 10/9?
100
Rearrange the formula to highlight R. I = PRT
What is R = I --- ? PT
100
Three more than twice a number is 11. Solve.
What is 2x + 3 = 11, therefore x = 8 ?
200
2 -- x = 6 3
What is x = 9?
200
Rearrange the formula to highlight t. d = rt
What is d --- ? r
200
2 times the sum of 3 and a number is 20. What is the number?
What is 2(3 + x) = 20, therefore, x = 7 ?
300
-2(m + 4) = 8
What is m = -8?
300
Rearrange the formula to highlight π (pi). C = 2πr
What is C --- ? 2r
300
4 less than the product of a number and 2 is 8. What is the number?
What is 2x - 4 = 8, therefore, x = 6 ?
400
4(x + 3) - x = 2(x + 1)
What is x = -10?
400
Rearrange the formula to highlight P. A = P(2.718)^(0.04t)
What is P = A ------------ ? 2.718^(0.04t)
400
The quotient of 5 more than a number and 3 is equal to 6. What is the number?
What is x + 5 ------- = 6, therefore x = 13. 3
500
2 1 -- (x - 9) = -- 3 6
What is 37 ---- ? 4
500
Rearrange the equation to highlight x. ax + b = c
What is c - b ------ ? a
500
Susie is 4 less than 2 times as old as Bob. Together their ages total 38. How old is each person?
What is Susie: 2x - 4 Bob: x Together: 2x - 4 + x = 38, therefore x = 14. Susie is 24 years old. Bob is 14.