Question

5 mũ 0 =?

12.35+35.182-35.66

x+2x=6

x+x=30

2x-25+5x=45

x-7+2x=8

Answer 1

a, \(5^0=1\)

b, \(12.35+35.182-35.66\)

\(=35.\left(12+182-66\right)\)

\(=35.128\)

\(=4480\)

c, \(x+2x=6\)

\(x.1+2.x=6\)

\(x\left(1+2\right)=6\)

\(x.3=6\)

\(x=2\)

Answer 2

d, \(x+x=30\)

\(2x=30\)

\(x=30:2\)

\(x=15\)

Answer 3

e, 2x -25 +5x =45

2x+5x=45+25

2x + 5x = 70

7x = 70

x = 10

f, x-7 + 2x = 8

x+2x=8+7

3x =15

x = 5

Answer 4

5mũ 0 = 1

Answer 5

\(5^0=1\\ 12.35+35.182-35.66\Leftrightarrow35.\left(12+182-66\right)=35.128=4480\\ x+2x=6\Leftrightarrow3x=6\Leftrightarrow x=2\\ x+x=30\Leftrightarrow2x=30\Leftrightarrow x=15\\ 2x-25+5x=45\Leftrightarrow-25+7x=45\Leftrightarrow7x=70\Leftrightarrow x=10\\ x-7+2x=8\Leftrightarrow-7+3x=8\Leftrightarrow3x=15\Leftrightarrow x=5\)