find the value of 20-(-70)
fully simpliy 8h+2h-5h+3w
(-8)+(-2)
9(a-b)^2-100(x-y)^2
(-8)=(-2)
calculate the GCD of 240 and 120
0.10*0.90 divided by 50 root 3
1000 $\sqrt{\}$ 324
calculate height of a pyramid
2,1 as a fraction
