Question

calcule o valor das expressoes

a) (3+2)x(5-1)+4

b)82-8x7:(4-1x3)

c)25-[10-(2x3+1)]

d)70-[12+(5x2-1)+6]




ajuda pfv​

Answer 1

a)

$\sf(3 + 2) \times (5 - 1) + 4 \\ \sf5 \times 4 + 4 \\ \sf20 + 4 \\ \sf \green2 \green4$

b)

$\sf82 - 8 \times 7 \div (4 - 1 \times 3) \\\sf82 - 8 \times 7 \div (4 - 3) \\ \sf82 - 8 \times 7 \div 1 \\ \sf82 - 56 \\ \sf \green2 \green6$

c)

$\sf25 - [10 - (2 \times 3 + 1)] \\ \sf25 - [10 - (6 + 1)] \\ \sf25 - [10 - 7] \\ \sf25 - 3 \\ \sf \green2 \green2$

d)

$\sf70 - [12 +(5 \times 2 - 1) + 6 ] \\ \sf70 - [12 +(10 - 1) + 6 ] \\ \sf70 - [12 +9 + 6 ] \\ \sf70 - 27 \\ \sf \green4 \green3$