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Simplifying 21y = 18(y + 7) Reorder the terms: 21y = 18(7 + y) 21y = (7 * 18 + y * 18) 21y = (126 + 18y) Solving 21y = 126 + 18y Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-18y' to each side of the equation. 21y + -18y = 126 + 18y + -18y Combine like terms: 21y + -18y = 3y 3y = 126 + 18y + -18y Combine like terms: 18y + -18y = 0 3y = 126 + 0 3y = 126 Divide each side by '3'. y = 42 Simplifying y = 42
| 82=8.5x-3 | | 2346567+567654=15t | | 128=-4(4n-8) | | 3=-4x-9 | | 30=12x-3 | | 17=11y+12x | | 23=9x-13 | | x^2-15x-110=0 | | 3.2x-0.25=-0.8 | | 40+.25x=25+.45 | | p=15+5D/11 | | 8x-2(2x-3)=6x-4 | | 2x(x)=72 | | ln(x+8)+ln(x+4)=2 | | -15=z/-2 | | 39=7x+4 | | 16t^2+72t+40=0 | | 3/5m-2=10 | | 42(p-5)=14(p+15) | | 5x-3=10+6 | | f(x)=-2x+4 | | 32=9/5c+32 | | 3t^2-t-4=0 | | 7/x^2+3/x | | 1.2+x=4.8 | | f(5)=-2x+4 | | 3/(r+4)-1/(r-4) | | 0=2x^2+x-105 | | x-5+4x-38=21 | | 5(q-3)=25 | | 2a+21=8a-1 | | x-5+4x-38=18 |