2 câu trả lời
Đáp án:
2.(x+35)=5-(1355+x)
⇔2x+65=27555-
<=> (110x)/55 + 66/55 = 275/55 - 13/55- (55x)/55
<=> 110x + 66 = 262 - 55x
<=> 165x = 196
<=> x = 196/165
Vậy S = {196/165}
#dariana
Lời giải:
2(x + 3/5) = 5 - (13/55 + x)
<=> 2x + 2 * 3/5 = 5 - 13/55 - x
<=> 2x + 6/5 = 5 - 13/55 - x
<=> 2x + x = 5 - 6/5 - 13/55
<=> 3x = 196/55
<=> x = 196/165
Vậy S = {196/165}