Question

7) 40 + 2 x [ 20 - ( 6 + 4 x 7 ):2]=

8) 6x{6x[6x(6+6) : (6+6)] : 36 =

9) 100:{48 +[(3x4 +8): (4x2+2)]} =

10) {[(8+8x9):(81:3-7)x(45:3-10)]:5}:2 =


11) 58 - [ 20 - ( 3 x 4 - 2) : 5 ] =


12) 35 + ( 13 x 8 - 4 ) 47) (12 + 2 x 5 ) – 8 =

Answer 1

Explicação passo-a-passo:

7) 40 + 2 x [ 20 - ( 6 + 4 x 7 ):2]=

$40 + 2 \times (20 - (34) \\ 40 + ( - 28)= 12$

8) 6x{6x[6x(6+6) : (6+6)] : 36 =

$6 \times (6.(6.(6. (1)))) \div 36 \\ 6 \times ({6}^{3 }) \div 36 \\ 6 \times 6 = 36$

9) 100:{48 +[(3x4 +8): (4x2+2)]} =

$100 \div (48 + (20) \div (10) \\ 100 \div (48 + 2) \\ 100 \div 50 = 2$

10) {[(8+8x9):(81:3-7)x(45:3-10)]:5}:2 =

$(((80) \div (20) \times (15 - 10) \times (5) \div (2) = \\ 80 \div( 20)(5) \times (5) \div2 \\ (4 \times 5 \times 5) \div 2 \\ 100 \div 2 = 50$

11) 58 - [ 20 - ( 3 x 4 - 2) : 5 ] =

$58 - (20 - (10) \div 5 \\ 58 - 10 \div 5 \\ 58 - 2 = 56$

12) 35 + ( 13 x 8 - 4 ) 47) (12 + 2 x 5 ) – 8 =

$35 + (100) \times (47) \times(22) - 8 \\ 35 + (103.400) - 8 = 103.427$