Răspuns :
(26 + ( x -7) * 2 ):2 =49
26 + ( x - 7 ) *2 =49*2
26 + ( x-7) *2 = 98
( x-7) *2 =98- 26
(x-7)*2=72
x-7=72:2
x-7=36
x=36+7
x=43
26 + ( x - 7 ) *2 =49*2
26 + ( x-7) *2 = 98
( x-7) *2 =98- 26
(x-7)*2=72
x-7=72:2
x-7=36
x=36+7
x=43