Question

Determinati x din :
a) x + 250 cm2 = 15 m2
b) 421 1000 mm2 + x = 9 m2
c) 2 × x + 3 m2 = 2,03 dam2
d) 64000 cm2 : x = 8 m2
e) 1700 m2 + x = 29 dam2
f) 0,5 km2 - x = 4500 dam 2

VA ROG sa scrieti si rezolvarea , nu doar raspunsul !
m2 = metri patrati
2 = patrat
Multumesc anticipat !

Answer 1

a)

x+250 cm²=15 m²

x+0,025 m²=15 m²

x=15 m²-0,025 m²

x=14,975 m²

b)

4211000 mm²+x=9 m²

4,211 m²+x=9 m²

x=9 m²-4,211 m²

x=4,789 m²

c)

2•x+3 m²=2,03 dam²

2x+0,03 dam²=2,03 dam²

2x=2,03 dam²-0,03 dam²

2x=2 dam²

x=2:2

x=1 dam²

d)

64000 cm²:x=8 m²

6,4 m²:x=8 m²

x=6,4 m²:8 m²

x=0,8 m²

e)

1700 m²+x=29 dam²

17 dam²+x=29 dam²

x=29 dam²-17 dam²

x=12 dam²

f)

0,5 km²-x=4500 dam²

5000 dam²-x=4500 dam²

x=5000 dam²-4500 dam²

x=500 dam²