a)2x=45+37
2x=82
x=82:2
x=41
b)78+x=59
x=59-78
x=-19
a)2x=37+45
2x=82
x=82:2
x=41
b)78+x=57
x=57-78
x=-21
a) ta có 2x-37=45
⇒2x =45+37
⇒2x =82
⇒x =82:2
⇒x =41
Vậy x=41
b) ta có 78+x=68-11
⇒78+x=57
⇒x=57-78
⇒x=-21
Vậy x=-21
NHỚ TICK CHO MK NHÉ
a)2x=45+37
=>2x=82
=>x=82/2 =>x=41
b)=>78+x=57
=>x=57-78=-21
a)2x=37+45
2x=82
x=82:2
x=41
b)78+x=57
x=57-78
x=-21
a)2x=37+45
2x=82
x=82:2
x=41
b)78+x=57
x=57-78
x=-21
a)2x=37+45
2x=82
x=82:2
x=41
b)78+x=57
x=57-78
x=-21
Giải:
a) 2x-37=45
2x=45+37
2x=82
x=82:2
x=41
b) 78+x=68-11
78+x=57
x=57-78
x=-21
Giải:
a)2x=45+37
2x=82
x=82:2
x=41
b)78+x=59
x=59-78
x=-19
Giải:
a)2x=45+37
2x=82
x=82:2
x=41
b)78+x=59
x=59-78
x=-19