me ajudem pfv
resolva as expressões:
a) 7x(1+3)=
b) 10-(2+5)x4=
c) (10-4)-(9-8)x3=
d) 50-[37-(15-8)x6]=
e) 20+[13+(10-6)x4]=
d) 50-[37-(15-8)x6]=
e) 20+{12+[2x(8-6)+2]}=
f) 25+{12+[2x(10-1+6)+1]}=
g) {[(18-3)+(7+5)x2]+5}-12=
h) 65-{30-[2x(10-1+6)+1]}=
i) 45+{15-[(10-8)x(7-4)-3]-4=
j) 52-{12+[15-(8-4)]}=
k) 26+{12-[(30-18)x(4-1)-6]-1}=
resolva as expressões:
a) 7x(1+3)=
b) 10-(2+5)x4=
c) (10-4)-(9-8)x3=
d) 50-[37-(15-8)x6]=
e) 20+[13+(10-6)x4]=
d) 50-[37-(15-8)x6]=
e) 20+{12+[2x(8-6)+2]}=
f) 25+{12+[2x(10-1+6)+1]}=
g) {[(18-3)+(7+5)x2]+5}-12=
h) 65-{30-[2x(10-1+6)+1]}=
i) 45+{15-[(10-8)x(7-4)-3]-4=
j) 52-{12+[15-(8-4)]}=
k) 26+{12-[(30-18)x(4-1)-6]-1}=
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Resposta:
a) 7x(1+3) = 7x4 = 28
b) 10-(2+5)x4 = 10-7x4 = 10-28 = -18
c) (10-4)-(9-8)x3 = 6-1x3 = 6-3 = 3
d) 50-[37-(15-8)x6] = 50-[37-7x6] = 50-[37-42] = 50-[-5] = 50+5 = 55
e) 20+[13+(10-6)x4] = 20+[13+4x4] = 20+[13+16] = 20+29 = 49
f) 25+{12+[2x(10-1+6)+1]} = 25+{12+[2x15+1]} = 25+{12+[30+1]} = 25+{12+31} = 25+43 = 68
g) {[(18-3)+(7+5)x2]+5}-12 = {[15+(12)x2]+5}-12 = {[15+24]+5}-12 = {[39]+5}-12 = 44-12 = 32
h) 65-{30-[2x(10-1+6)+1]} = 65-{30-[2x15+1]} = 65-{30-[30+1]} = 65-{30-31} = 65-{1} = 64
i) 45+{15-[(10-8)x(7-4)-3]-4} = 45+{15-[(2)x(3)-3]-4} = 45+{15-[6-3]-4} = 45+{15-3-4} = 45+{12-4} = 45+{8} = 53
j) 52-{12+[15-(8-4)]} = 52-{12+[15-4]} = 52-{12+11} = 52-{23} = 29
k) 26+{12-[(30-18)x(4-1)-6]-1} = 26+{12-[(12)x(3)-6]-1} = 26+{12-[36-6]-1} = 26+{12-30-1} = 26+{-19} = 7
ESPERO TER AJUDADO, BONS ESTUDOS.