Question

6+[15-(8÷a×7+7)]×5=8:(1×4)+3×3

Answer 1

Răspuns:

Explicație pas cu pas:

6+[15-(8÷a×7+7)]×5=8:(1×4)+3×3

6+[15-(8÷a×7+7)]×5=8:4+9

6+[15-(8÷a×7+7)]×5=2+9

6+[15-(8÷a×7+7)]×5=11

[15-(8÷a×7+7)]×5 = 11 - 6

[15-(8÷a×7+7)]×5 = 5

15-(8÷a×7+7) = 5 : 5 = 1

8÷a×7+7 = 15 - 1 = 14

8÷a×7 = 14 - 7 = 7

8÷a = 7 : 7 = 1

a = 8 : 1 = 8

Answer 2

6+[15-(8:a×7+7)]×5=8:4+9

6+[15-(8:a×7+7)]×5=11

[15-(8:a×7+7)]×5=5

15-(8:a×7+7)=1

8:a×7+7=15-1

8:a×7+7=14

8:a×7=7

8:a=1

a=8:1

a=8