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4. Află numerele necunoscute. 5 × x + 170 = 200 100:y + 125 = 135 ​

Răspuns :

5 * x + 170 = 200

5 * x = 200 - 170

5 * x = 30

x = 30 : 5

x = 6

100 : y + 125 = 135

100 : y = 135 - 125

100 : y = 25

y = 100 : 25

y = 4

5x X+170=200
5X=200-170 =>5X=30 =>x=6

100:y+125=135
100:y=135-125
100:y=10
100:10=y
10=y=> y=10