-4x - 7 = 16 -4x = 16 + 7 -4x = 23 x = -23/4 x = -5.75 Check: -4(-5.74) - 7 = 16 23 - 7 = 16 16 = 16
Yes, because: x+7 = 23 x = 23-7 x = 16
Not an even multiple. 2 x 7 = 14 (22/7) x 7 = 16 3 x 7 = 21
2 x 7 x pi x 16 or 224pi
-9
-4x - 7 = 16 -4x = 16 + 7 -4x = 23 x = -23/4 x = -5.75 Check: -4(-5.74) - 7 = 16 23 - 7 = 16 16 = 16
Yes, because: x+7 = 23 x = 23-7 x = 16
Not an even multiple. 2 x 7 = 14 (22/7) x 7 = 16 3 x 7 = 21
48 = 24 x 3 = 16 x 3 224 = 25 x 7 = 24 x 2 x 7 = 16 x 7 hcf(48,224) = 16
7 x 16 = 112
Set up the prolem as x + 9 = 16 (with x representing the unknown number) and solve: x + 9 = 16 (then subtract 9 from each side of the equation to solve for x) x = 7 Prove the answer by substiting 7 for x: x + 9 = 16 7 + 9 = 16 16 = 16
As 112 = 16 x 7 then we can write :- √112 = √(16 x 7) = √16 x √7 = 4√7 The value for √7 needs to be obtained via a calculator Then √112 = 4√7 = 4 x 2.64575 = 10.58300
2 x 7 x pi x 16 or 224pi
(21 + 7) x (9-4) - 16 (28) x (5) - 16 140 - 16 124
-9
7/8 x 16 = (7 x 16)/8 = 14
16 x 9 x 5 x 7 = 5040