-40 = 8-6s -40 - 8 = 6s -48 = 6s 8 = s
6s+2s=72 combine like terms 6s+2s=8s set equal to 72 8s=72 divide both sides by 8 to solve for "s". 8s=72 8 8 your answer is s= 72/8 which is 9.
-6s+10 = -5s 5s-6s = -10 -s = -10 s = 10
1 - s = 6 - 6s => 5s = 5 so that s = 1
16
s + 3 = 6s -s -s ------------- 3 = 5s /5 /5 s=3/5 or s=.6
9s+6s-12s=24... Ignore the 's' for a moment giving the sum 9+6-12=24 - This results in the answer 3 x 'something' = 24. Therefore s=8 !
7z + 6s + s = 7z + 7s This can then be factorised using 7 as the factor: 7z + 7s = 7(z + s)
4s-5t = 18 6s+10t = -8 Multiply all the terms in the top equation by 2: 8s-10t = 36 6s+10t = -8 Adding both equations leaves you with: 14s = 28 Divide both sides of the equation by 14 to find the value of s: s = 2 Substitute the value of s into the original equations to find the value of t: t = -2 Remember when substituting that a - times a - is equal to a + therfore: -5t = 10
5s - 3 = 3s - 92s = -6s = -3
8
8 sides on a stop sign