2 × 4 = 8. Well, in Algebra we don't use blank boxes, we use a letter. ... Instead of saying "obviouslyx=2", use this neat step-by-step approach: ... it to both sides. 4x=8 divide left and right by 4. Which is ... 1x = 2. Solved! x = 2 ... If we multiply by 3 we can cancel out the divide by 3 (because 3/3=1) ... 3 times xplus 9 is 45:.
