Giúp mình với mn

A.x=188

B.x=900

Xx15+Xx13=560x45

Xx15+Xx13=25200

Xx(15+13)=25200

Xx28=25200

X=25200:28

X=900

ai trả lời nhanh mk tích cho

\(x\times405=86265\)

\(x=86265:405\)

\(x\text{=}213\)

\(89658:x=293\)

\(x=89658:293\)

\(x\text{=}306\)

\(x+126=480\)

\(x=480-126\)

\(x=354\)

\(x-209\text{=}435\)

\(x\text{=}435+209\)

\(x\text{=}644\)

\(x:13=200+5\)

\(x:13\text{=}205\)

\(x\text{=}205\times13\)

\(x\text{=}2665\)

\(x\times40\text{=}26000-400\)

\(x\times40=25600\)

\(x\text{=}25600:40\)

\(x\text{=}640\)

\(962456-x=342\times7\)

\(962456-x=2394\)

\(x\text{=}962456-2394\)

\(x\text{=}960062\)

a: =>28x=25200

hay x=900

x×15+x×45=2

a) \(x\times15+x\times13=560\times45\)
\(\Rightarrow x\times\left(15+13\right)=25200\)
\(\Rightarrow x\times28=25200\)
\(\Rightarrow x=25200:28\)
\(\Rightarrow x=900\)

tự tính đi, dễ vậy mà cần giúp

ngu

a) x . 15 + x . 13 = 560 . 45

x ( 15 + 13 ) = 25 200

x . 28 = 25 200

x = 25 200 : 28

x = 900

b) x . 125 - x . 73 = 1196

x ( 125 - 73 ) = 1196

x . 52 = 1196

x = 1196 : 52

x = 23

\(15+x\times13=560\times45\)

\(15+x\times13=25200\)

\(x\times13=25200-15\)

\(x\times13=25185\)

\(x=25185:13\)

\(x=8395\)

15+X x 13 = 25200

X x 13 = 25200-15

X x 13 = 25185

X = 25185/13