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Simplifying 30 = x + (x + 4) Reorder the terms: 30 = x + (4 + x) Remove parenthesis around (4 + x) 30 = x + 4 + x Reorder the terms: 30 = 4 + x + x Combine like terms: x + x = 2x 30 = 4 + 2x Solving 30 = 4 + 2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2x' to each side of the equation. 30 + -2x = 4 + 2x + -2x Combine like terms: 2x + -2x = 0 30 + -2x = 4 + 0 30 + -2x = 4 Add '-30' to each side of the equation. 30 + -30 + -2x = 4 + -30 Combine like terms: 30 + -30 = 0 0 + -2x = 4 + -30 -2x = 4 + -30 Combine like terms: 4 + -30 = -26 -2x = -26 Divide each side by '-2'. x = 13 Simplifying x = 13
| 4+12x=15x | | l^2-l-72=0 | | 12x^2-4x-21=0 | | 8g^5b^8/48g^5b^4 | | 14x-121=6x-4 | | x^2+4*x-15=0 | | 7.3+2.5x= | | -x+3(-2x+4)=-9 | | 1-2y+3z+2y=3z | | 250=63-v | | 7(x-9)+9=7x-9(9-x) | | 2x-3=7-5x | | 3(2+x)=3x+ | | -7y+46=6(y+1) | | 4xotc+2=-3 | | -108=7k-8(-6-4k) | | 5(3x-9)-3=5(x-2)-18 | | 5(-2)-3y=-14 | | (-1)(-1)(6)w=-12 | | 4cotx+2=-3 | | 15=x/y | | m-7=2(-3m-6) | | 7x-10=6x+11 | | -/-8-(-1)/-(-11)= | | 5(-2)-3y=2 | | 5(2x-4)-3=5(x-2)+2 | | n-14=m | | (a^3/5m)^-4 | | sqrt(5)*sqrt(-15)=0 | | (x+y+z)=x^2+y^2+z^2 | | =0.2962962963 | | 7y-6=13y+36 |