Question

Temă
Calculează folosind metoda mersului invers
a) a-8+3-9= 68
b) 6+b+8+56=158
c) 78+c+34=235
d) d-3-2+121= 444
e) e+45-7+65= 1230​

Answer 1

a) a-8+3-9=68

a-8+3=68+9=77

a-8=77-3=74

a=74+8

a=82

b)6+b+8+56=158

6+b+8=158-56=102

6+b=102-8=94

b=94-6

b=88

c)78+c+34=235

78+c=235-34=201

c=201-78

c=123

d)d-3-2+121=444

d-3-2=444-121=323

d-3=323+2=325

d=325+3

d=328

e)e+45-7+65=1230

e+45-7=1230-65=1165

e+45=1165+7=1172

e=1172-45

e=1127

•Sper că te-am ajutat•