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13\left(2x-10\right)+20\left(4x+5\right)=1560
Multiply both sides of the equation by 260, the least common multiple of 20,13.
26x-130+20\left(4x+5\right)=1560
Use the distributive property to multiply 13 by 2x-10.
26x-130+80x+100=1560
Use the distributive property to multiply 20 by 4x+5.
106x-130+100=1560
Combine 26x and 80x to get 106x.
106x-30=1560
Add -130 and 100 to get -30.
106x=1560+30
Add 30 to both sides.
106x=1590
Add 1560 and 30 to get 1590.
x=\frac{1590}{106}
Divide both sides by 106.
x=15
Divide 1590 by 106 to get 15.