Question

vreau zece exercitii la matematica de clasa a5-a

Answer 1

17+x=25
x=25-17
x=8
S=(8)

4z-z=24+5×12
3z=84
z=84÷3
z=28
S=(28)

7-x=2
x=7-2
x=5
S=(5)

8x=32
x=32÷8
x=4
S=(4)


x÷9=54
x=54×9
x=486
S=(486)

8x+3=27
8x=27-3
8x=24
8x=24÷8
x=3
S=(3)

8Y+7Y=1000÷8×3
(8+7)×Y=375
15×Y=375
Y=375÷15
Y=25
S=(25)

Answer 2

95%5=19

825%15=55

300-300%5=300-60=240

3×44-44%4=132-11=121

204% (32-7×4)=204% (32-28)=204%4=51

12×35-12×24+12=420-288+12=132+12=144