There would be 81 in grade 5
and 68 in grade 6
because 10% of 90 is 9 so 90 - 9 =81
and 15% of 80 is 12 so 80 - 12 = 68
S=saving
X=amount left
S-55=x
Another way : x=s-55
√52 square root of 52, 6*6=36 -4*-4=16 add them together and then square root that number
Answer:
n=2
Step-by-step explanation:
Step 1 :
1
Simplify —
2
Equation at the end of step 1 :
1
((— • (n - 4)) - 3) - -2n = 0
2
Step 2 :
Equation at the end of step 2 :
(n - 4)
(——————— - 3) - -2n = 0
2
Step 3 :
Rewriting the whole as an Equivalent Fraction :
3.1 Subtracting a whole from a fraction
Rewrite the whole as a fraction using 2 as the denominator :
3 3 • 2
3 = — = —————
1 2
