Question

(42÷7×7-2):4×10=(5×7+5)÷8+9×10+a​

Answer 1

Răspuns:

Explicație pas cu pas:

( 42 : 7 × 7 - 2 ) : 4 × 10 = ( 5 × 7 + 5 ) : 8 + 9 × 10 + a

( 6×7 - 2) : 4 × 10 = ( 35 + 5 ) : 8 + 90 + a

( 42 - 2 ) : 4 × 10 = 40 : 8 + 90 + a

40 : 4 × 10 = 5 + 90 + a

10 × 10 = 95 + a

100 = 95 + a

a = 100 - 95

a = 5