Toán Lớp 6: a) 360+x = -6
b) 2.x- 138 = 2 mũ 3 nhân 3 mũ 2
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Toán Lớp 6: a) 360+x = -6
b) 2.x- 138 = 2 mũ 3 nhân 3 mũ 2
giúp mik nha
Comments ( 2 )
a) 360+x = -6
⇔x =-6-360
⇔x=-366
Vậy x=-366
b) 2.x -138=2^3 .3^2
⇔ 2x-138=8.9
⇔2x-138=72
⇔2x=72+138
⇔2x=210
⇔x=105
Vậy x=105
a) 360 + x = -6
x = -6 – 360
x = -366
b) 2x – 138 = 2^3 . 3^2
2x – 138 = 8 . 9
2x – 138 = 72
2x = 72 + 138
2x = 210
x = 210 : 2
x = 105