19-2x=13 19 -13 ------ 6 6/2=3 19-(2)(3)=13 x=3
2x+7x-10=4x+3-2x 9x-10=2x+3 7x=13 x=13/7ans
X= -8
If you meant 2x+3=4x²x=(1±√(13))/4x1≈1.151387818866x2≈-0.651387818866
2x-3y=13
2x+3y=13 3x-y=3 x=2
13 + 2x = 32x = 3 - 132x = -10x = -5
2X - 3 = 13 add 3 to each side 2X = 16 divide both sides by 2 X = 8 check 2(8) - 3 = 13 13 = 13 checks
19-2x=13 19 -13 ------ 6 6/2=3 19-(2)(3)=13 x=3
2x+7x-10=4x+3-2x 9x-10=2x+3 7x=13 x=13/7ans
X= -8
2x + 5 = 13 2x = 8 2x/2 = 8/2 x=4
2x + y = 5 so y = 5 - 2x; This gives x - 3(5 - 2x) = 13 ie x + 6x = 13 + 15 so x = 4 and y must be -3
If you meant 2x+3=4x²x=(1±√(13))/4x1≈1.151387818866x2≈-0.651387818866
2x-3y=13
2x-17=13 2x=30 x=15
2x + 1 = 13; 2x = 12; x = 6