Help to resolve this equation system 30x+3y+9z= 66

35x+16y+13z= 94.5

200x+10y+300z= 910

Let's solve for x.

30x+3y+9z=66

Step 1: Add -3y to both sides.

30x+3y+9z+−3y=66+−3y

30x+9z=−3y+66

Step 2: Add -9z to both sides.

30x+9z+−9z=−3y+66+−9z

30x=−3y−9z+66

Step 3: Divide both sides by 30.

30x/30=−3y−9z+66/30

x=−1/10y+−3/10z+11/5

Let's solve for x.

35x+16y+13z=94.5

Step 1: Add -16y to both sides.

35x+16y+13z+−16y=94.5+−16y

35x+13z=−16y+94.5

Step 2: Add -13z to both sides.

35x+13z+−13z=−16y+94.5+−13z

35x=−16y−13z+94.5

Step 3: Divide both sides by 35.

35x/35=−16y−13z+94.5/35

x=−16/35y+−13/35z+2.7

Let's solve for x.

200x+10y+300z=910

Step 1: Add -10y to both sides.

200x+10y+300z+−10y=910+−10y

200x+300z=−10y+910

Step 2: Add -300z to both sides.

200x+300z+−300z=−10y+910+−300z

200x=−10y−300z+910

Step 3: Divide both sides by 200.

200x/200=−10y−300z+910/200

x=−1/20y+−3/2z+91/20

Step-by-step explanation:

hopes this helps:-)