Question

Calculează respectând regulile învățate
13 X 4 -72:2 96:4x3-48:2x2. 924-5 x (45:3+7x24)



Ex 2 : afla numărul x
214+x=5003
823-x=597
X-198=5718




B.X x 5=85
X:8=165
90:x=. 9

Answer 1

ex 1. 13×4 -72:2=52-36=16

96:4x3-48:2x2=24×3-24×2=72-48=24

924-5×(45:3+7x24)=924-5×(15+168)=924-5×183=924-915=9

ex 2. 214+x=5003 x=5003-214 x=4789

         823-x=597 x=597+823 x=1420

          X-198=5718 x=5718+198 x=5916

      b. X×5=85 x=85:5 x=17

         X:8=165 x=165×8 x=1320

          90:x=9 x=9×90 x=810