315 - ( 5x + 180 ) = 155
=> -5x + 180 = 160
=> -5x = -20
=> x = 4
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315 - ( 5x + 180 ) = 155
=> -5x + 180 = 160
=> -5x = -20
=> x = 4
Tìm x:
a.156 -2 * x = 80
b.315 + 5 *x =200
c.5 * (x + 3) -20 =40
d.180 : 80 (x +2 )=60
3/7 + 4/5 + 4/7
3/2 x 4/5 x 2/3
4/6 + 7/13 + 17/9 + 19/13 + 1/9 + 14/6
315/316 x 316 /314 x 316/315 x 317/313
Tìm x :
X + X : 5 x 7 . 5 + X : 2 x 9 = 315
x + x / 5 * 7.5 + x / 2 * 9 = 315
x+x÷5×7.5+x÷2×9=315
x+x:5*7,5+x:2*9=315
x+x:5*7.5+x:2*9=315
x + x : 5 . 7,5 + x : 2 . 9 = 315