Question

Đơn giản biểu thức :

a. x + 22 + (-14) + 52

b .(-90) - ( p +10) + 100

Answer 1

a, \(x+22+\left(-14\right)+52\)

\(=x+\left(22+52\right)+\left(-14\right)\)

\(=x+74+\left(-14\right)\)

\(=x+60\)

b, \(\left(-90\right)-\left(p+10\right)+100\)

\(-90-p-10+100\)

\(=-p-\left[100+\left(-90\right)-10\right]\)

\(=-p+0\)

\(=-p\)

Answer 2

a, x + 22 + (- 14) + 52 = x + 60

b, - 90 - ( p + 10 ) + 100 = -90 - p - 10 + 100 = -p - 90 - 10 + 100 = -p - ( 90 + 10 - 100 ) = -p - 0 = -p