Question

(a+30)*2+150:3=450
Dau coroana ​

Answer 1

Explicație pas cu pas:

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(a+30)×2+150:3=450

(a+30)×2+50=450

(a+30)×2=450-50

(a+30)×2=400

a+30=400:2

a+30=200

a=200-30

a=170

Succes!;)

Answer 2

Salutare!

$(a + 30) \times 2 + 150 \div 3 = 450 \\ (a + 30) \times 2 + 50 = 450 \\ (a + 30) \times 2 = 450 - 50 \\ (a + 30) \times 2 = 400 \\ (a + 30) = 400 \div 2 \\ a + 30 = 200 \\ a = 200 - 30 \\ a = 170$

Verificare:

$(170 + 30)\times 2 + 150 \div 3 = \\ 200 \times 2 + 50 = \\ 400 + 50 = \\ 450$