А)-(9.8+6.9)-(10,2-6.9) б)(1.59+3.47)-(2.47+0.59) в)(1.9+2.5)-(5.9-2.5) г)(0.85+1.5)-(-0.65-3.5)

Question

А)-(9.8+6.9)-(10,2-6.9) б)(1.59+3.47)-(2.47+0.59) в)(1.9+2.5)-(5.9-2.5) г)(0.85+1.5)-(-0.65-3.5)

Математика

Гость

Ответ(ы) на вопрос:

Accepted Answer

а)-(9.8+6.9)-(10,2-6.9)= -9,8-6,9-10,2+6,9=-20;/// б)(1.59+3.47)-(2.47+0.59)= 1,59+3,47-2,48-0,59=1,99;//// в)(1.9+2.5)-(5.9-2.5)= 1,9+2,5-5,9+2,5=1;//// г)(0.85+1.5)-(-0.65-3.5)= 0,85+1,5+0,65+3,5=6,5