Question

Resolva as expressões

a) 5x3+2x4-1

B) 2+ 4:4 +3x2

C) 8+10x4-3x7

D) 5+3x7:3

PRECISO PRA HOJE ME AJUDA

Answer 1

Resposta:

a) 22

b) 12

c) 27

d) 14

Explicação passo a passo:

Answer 2

A)23x-1

B)3+6x

C)8+19x

D)5+7x

Explicação passo a passo

A)5x3+2x4-1

5x×3+2x×4-1

5x×3

15x

5x×3+2x×4-1

15x+2x×4-1

5x×3+2x×4-1

2x×4-1

8x

5x×3+2x×4-1

15x×8x-1

15x+8x

(15+8)x

23x

15x+8x-1

23x-1

Resposta

23x-1

B)2+4÷4+3x2

2+4÷4+3x×2

2+1+3x×2

2+4÷4+3x×2

3x×2

6x

2+4÷4+3x×2

2+1+6x

3+6x

Resposta

3+6x

C)8+10x4-3x7

8+10x×4-3x×7

10x×4

40x

8+10x×4-3x×7

8+40x-3x×7

8+10x×4-3x×7

-3x×7

-(3×7)x

-21x

8+10x×4-3x×7

8+40x-21x

40x-21x

(40-21)x

19x

8+40x-21x

8+19x

Resposta

8+19x

D)5+3x7÷3

5+3x×7÷3

• 5+1x×7

5+x×7

5+1x×7

5+7x

resposta

5+7x