Question

Đơn giản biểu thức :

a) \(x+25+\left(-17\right)+63\)

b) \(\left(-75\right)-\left(p+20\right)+95\)

Answer 1

a, \(x+25+\left(-17\right)+63\)

\(=x+25-17+63\)

\(=x+8+63\)

\(=x+71\)

b, \(\left(-75\right)-\left(p+20\right)+95\)

\(=-75-p-20+95\)

\(=-p-75-20+95\)

\(=-p-55+95\)

\(=-p-150\)

Answer 2

a) x + 25 + (- 17) + 63

x + 42 + 63

x + 105

b) (- 75) - (p + 20) + 95

= - 75 - p - 20 + 95

= p - 75 - 20 + 95

= p - 55 + 95

= p - 150